Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globe -- Episode 525https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525en-USTelligent Community 12Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globe -- Episode 525https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525Fri, 19 Nov 2021 08:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bMatthttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsCurrent Revision posted to Documents by Matt on 11/19/2021 8:24:00 AM<br /> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="noopener noreferrer nofollow" target="_blank" data-e14adj="t">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="noopener noreferrer nofollow" target="_blank" data-e14adj="t">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-95b6c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('95b6c'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-937f8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('937f8'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-34534" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('34534'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-a42b9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a42b9'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-c2c9a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c2c9a'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-690bb" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('690bb'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-3db23" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3db23'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-f981b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f981b'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-9f6b2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('9f6b2'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-3cad0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3cad0'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-b6ed2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b6ed2'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-1883c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1883c'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/" data-e14adj="t"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents" data-e14adj="t">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes" data-e14adj="t">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes" data-e14adj="t">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14p_WK, e14presents_whitney, element14 presents, project videos, whitney, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/11Sat, 09 Jul 2022 00:06:37 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bsaradetwilerhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 11 posted to Documents by saradetwiler on 7/9/2022 12:06:37 AM<br /> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-69f5c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('69f5c'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-05369" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('05369'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-ef663" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ef663'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-acd04" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('acd04'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-3dd3f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3dd3f'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-17835" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('17835'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-27135" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('27135'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-aaa7f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('aaa7f'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-a2973" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a2973'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-3d664" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3d664'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-c74b5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c74b5'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-36841" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('36841'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14p_WK, e14presents_whitney, element14 presents, project videos, whitney, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/10Wed, 23 Feb 2022 18:44:09 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 10 posted to Documents by kellyhensen on 2/23/2022 6:44:09 PM<br /> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-2f633" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('2f633'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-4fad7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4fad7'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-fa33c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fa33c'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-4a35f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4a35f'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-72b3f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('72b3f'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-74de3" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('74de3'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-ae313" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ae313'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-988d8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('988d8'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-db3ed" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('db3ed'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-34dec" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('34dec'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-4bd98" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4bd98'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-19e84" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('19e84'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, project videos, whitney, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/9Tue, 07 Dec 2021 16:46:47 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 9 posted to Documents by kellyhensen on 12/7/2021 4:46:47 PM<br /> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-247df" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('247df'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-ff133" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ff133'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-68e44" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('68e44'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-54541" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('54541'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-004c1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('004c1'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-06e58" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('06e58'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-df2d0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('df2d0'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-3c858" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3c858'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-942c9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('942c9'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-1bfe5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1bfe5'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-2ae5d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('2ae5d'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-275e5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('275e5'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, project videos, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/8Tue, 07 Dec 2021 16:44:42 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 8 posted to Documents by kellyhensen on 12/7/2021 4:44:42 PM<br /> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-897a6" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('897a6'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-bb5ec" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('bb5ec'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-c7129" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c7129'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-2785a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('2785a'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-c5635" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c5635'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-457ad" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('457ad'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-f8a29" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f8a29'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-8e3f2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('8e3f2'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-c7d43" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c7d43'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-33162" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('33162'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-f5cfa" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f5cfa'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-201df" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('201df'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/7Tue, 07 Dec 2021 16:44:09 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 7 posted to Documents by kellyhensen on 12/7/2021 4:44:09 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a href="/challenges-projects/element14-presents">element14 presents</a> |&nbsp;&nbsp;<a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">About Whitney</a></span>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-e8bb9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('e8bb9'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-31402" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('31402'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-2973e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('2973e'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-a16fd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a16fd'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-81bc2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('81bc2'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-99bb0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('99bb0'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-84788" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('84788'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-c75b0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c75b0'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-da641" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('da641'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-43534" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('43534'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-fe9bb" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fe9bb'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-a23ee" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a23ee'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/6Tue, 23 Nov 2021 17:19:54 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bpchanhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 6 posted to Documents by pchan on 11/23/2021 5:19:54 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/27355/vcp-biography-whitney-knitter?ICID=e14presents-projectvideo-episodes">Whitney Knitter Profile</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/?ICID=e14presents-projectvideo-episodes">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-8b8d1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('8b8d1'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-34b00" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('34b00'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-00aaf" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('00aaf'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-d05ba" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d05ba'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-5d419" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5d419'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-3edd6" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3edd6'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-0b9f4" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0b9f4'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-b7e21" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b7e21'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-0cf53" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0cf53'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-d4a37" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d4a37'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-7cccd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7cccd'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-25c11" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('25c11'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/5Tue, 23 Nov 2021 15:14:56 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 5 posted to Documents by kellyhensen on 11/23/2021 3:14:56 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-ebe92" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ebe92'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-af2c1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('af2c1'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-239ed" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('239ed'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-66b48" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('66b48'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-68035" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('68035'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-1fa69" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1fa69'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-7cc22" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7cc22'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-7ce7e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7ce7e'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-98b20" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('98b20'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-fd4c1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fd4c1'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-7fc62" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7fc62'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-23e94" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('23e94'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_whitney, element14 presents, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/4Tue, 23 Nov 2021 15:13:40 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 4 posted to Documents by kellyhensen on 11/23/2021 3:13:40 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-b64c3" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b64c3'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-38a6b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('38a6b'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-cef02" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cef02'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-8a945" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('8a945'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-e7f56" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('e7f56'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-7024c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7024c'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-054a5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('054a5'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-65f3b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('65f3b'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-e697d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('e697d'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-6a203" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('6a203'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-bd0d8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('bd0d8'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-01e70" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('01e70'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> </tbody> </table> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th></th> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_kdumont, e14presents_katiedumont, element14 presents, music, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/3Tue, 23 Nov 2021 14:57:14 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bdychenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 3 posted to Documents by dychen on 11/23/2021 2:57:14 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-9923d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('9923d'));" data-farnell="2830996" data-newark="47AC4973,28Y4988,02AH9025,48AC7804,45J0634,62X0621,12T1471~2,97AC1038~2,56AC4564,48AC8172~2,52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetema=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," data-avnetasia=",,,,,,undefined~2,undefined~2,,undefined~2,,,,," >Buy Kit</a> </th> </tr> <tr> <td>GKX00006 - Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td>ARDUINO</td> <td>1</td> <td><a id="e14-product-link-cec0f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2830996&nsku=47AC4973&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cec0f'));" data-farnell="2830996" data-newark="47AC4973" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-c9ec1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c9ec1'));" data-farnell="" data-newark="28Y4988" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-0c6a7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0c6a7'));" data-farnell="" data-newark="02AH9025" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-3153a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3153a'));" data-farnell="" data-newark="48AC7804" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td>onsemi</td> <td>1</td> <td><a id="e14-product-link-cfde7" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cfde7'));" data-farnell="" data-newark="45J0634" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td>NEXPERIA</td> <td>1</td> <td><a id="e14-product-link-4f18a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4f18a'));" data-farnell="" data-newark="62X0621" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>B530C-13-F - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td>DIODES INC.</td> <td>2</td> <td><a id="e14-product-link-d0f8c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d0f8c'));" data-farnell="" data-newark="12T1471" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td>HOLSWORTHY - TE CONNECTIVITY</td> <td>2</td> <td><a id="e14-product-link-8485a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('8485a'));" data-farnell="" data-newark="97AC1038" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-762a5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('762a5'));" data-farnell="" data-newark="56AC4564" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td>Adafruit</td> <td>2</td> <td><a id="e14-product-link-a37c0" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a37c0'));" data-farnell="" data-newark="48AC8172" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td>Adafruit</td> <td>1</td> <td><a id="e14-product-link-d91cf" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d91cf'));" data-farnell="" data-newark="52X6819" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th>**BUY_KIT**</th> </tr> <tr> <td>3D Printed Rings with base</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Mineral oil</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Ferrite shavings</td> <td></td> <td></td> <td></td> </tr> <tr> <td>Current driver circuit PCB</td> <td></td> <td></td> <td></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;"></p> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_kdumont, e14presents_katiedumont, element14 presents, music, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/2Tue, 23 Nov 2021 14:03:15 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bkellyhensenhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 2 posted to Documents by kellyhensen on 11/23/2021 2:03:15 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field &ldquo;visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s90"><span style="color:#3334ca;">Supplemental Content:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"><span style="color:#303030;">CAD Files</span></p> <ul> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li> <li><a class="jive-link-external-small" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener noreferrer" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li> </ul> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s91"><span style="color:#3334ca;">Bill of Materials</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <table class="jiveBorder" style="border:1px solid #C6C6C6;" border="1"> <thead> <tr> <th style="background-color:#f2f2f2;border:1px solid #C6C6C6;color:#505050;padding:6px;text-align:left;">Product Name</th> <th style="background-color:#f2f2f2;border:1px solid #C6C6C6;color:#505050;padding:6px;text-align:left;">Manufacturer</th> <th style="background-color:#f2f2f2;border:1px solid #C6C6C6;color:#505050;padding:6px;text-align:left;">Quantity</th> <th style="background-color:#f2f2f2;border:1px solid #C6C6C6;color:#505050;padding:6px;text-align:left;"><span><span id="addProduct-ljpPmi4d-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=2830996~1,1651581~1,2336809~1,1843766~2,3229640~2&amp;nsku=47AC4973~1,28Y4988~1,02AH9025~1,48AC7804~1,45J0634~1,62X0621~1,12T1471~2,97AC1038~2,56AC4564~1,48AC8172~2,52X6819~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1,1651581~1,2336809~1,1843766~2,3229640~2&amp;nsku=47AC4973~1,28Y4988~1,02AH9025~1,48AC7804~1,45J0634~1,62X0621~1,12T1471~2,97AC1038~2,56AC4564~1,48AC8172~2,52X6819~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Kit</a></span><span id="addProduct-ljpPmi4d-unlinked" class="e14-init-hidden">Buy Kit</span></span></th> </tr> </thead> <tbody> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">GKX00006 -&nbsp; Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td> <td style="border:1px solid #C6C6C6;padding:6px;">ARDUINO</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-U7TCB2iQ-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=2830996~1&amp;nsku=47AC4973~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1&amp;nsku=47AC4973~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-U7TCB2iQ-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-C7YhyWW2-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=&amp;nsku=28Y4988~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=28Y4988~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-C7YhyWW2-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Short Female Header Kit for ItsyBitsy[ID:4174]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-BXawpPdE-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=&amp;nsku=02AH9025~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=02AH9025~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-BXawpPdE-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-1rMZ8e7M-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=&amp;nsku=48AC7804~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC7804~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-1rMZ8e7M-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 &deg;C</td> <td style="border:1px solid #C6C6C6;padding:6px;">onsemi</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-XRvcodjo-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1651581~1&amp;nsku=45J0634~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="/community/view-product.jspa?fsku=1651581~1&amp;nsku=45J0634~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-XRvcodjo-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td> <td style="border:1px solid #C6C6C6;padding:6px;">NEXPERIA</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-HzWOSudc-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2336809~1&amp;nsku=62X0621~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="/community/view-product.jspa?fsku=2336809~1&amp;nsku=62X0621~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-HzWOSudc-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-6Ymzxn2e-linked" class="e14-init-shown" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1843766&amp;nsku=12T1471&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1843766&amp;nsku=12T1471&amp;COM=noscript" rel="noopener noreferrer" target="_blank">B530C-13-F</a></span><span id="addProduct-6Ymzxn2e-unlinked" class="e14-init-hidden">B530C-13-F</span></span> - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td> <td style="border:1px solid #C6C6C6;padding:6px;">DIODES INC.</td> <td style="border:1px solid #C6C6C6;padding:6px;">2</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-k2thjRxD-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1843766~2&amp;nsku=12T1471~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="/community/view-product.jspa?fsku=1843766~2&amp;nsku=12T1471~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-k2thjRxD-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, &plusmn; 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td> <td style="border:1px solid #C6C6C6;padding:6px;">HOLSWORTHY - TE CONNECTIVITY</td> <td style="border:1px solid #C6C6C6;padding:6px;">2</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-dkn3IDL4-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=3229640~2&amp;nsku=97AC1038~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=3229640~2&amp;nsku=97AC1038~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-dkn3IDL4-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-jGvQQkeF-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=&amp;nsku=56AC4564~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=56AC4564~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-jGvQQkeF-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Enameled Copper Magnet Wire &ndash; 11 meters / 0.1mm diameter[Adafruit ID:3522]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">2</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-NiTtQssp-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="/community/view-product.jspa?fsku=&amp;nsku=48AC8172~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC8172~2&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-NiTtQssp-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td> <td style="border:1px solid #C6C6C6;padding:6px;">Adafruit</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-evS3AOvN-linked" class="e14-init-shown e14-product-link-buynow" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=52X6819~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=52X6819~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-evS3AOvN-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> </tbody> </table> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1fl6hd1s92"><span style="color:#3334ca;">Additional Parts:</span></h2> <p style="margin:0;padding:0px;">&nbsp;</p> <table class="jiveBorder" style="border:1px solid #000000;width:100%;" border="1"> <thead> <tr> <th style="background-color:#6690bc;border:1px solid #000000;color:#ffffff;padding:2px;text-align:left;" valign="middle"><strong>Product Name</strong></th> </tr> </thead> <tbody> <tr> <td style="border:1px solid #000000;padding:2px;">3D Printed Rings with base</td> </tr> <tr> <td style="border:1px solid #000000;padding:2px;">Mineral oil</td> </tr> <tr> <td style="border:1px solid #000000;padding:2px;">Ferrite shavings</td> </tr> <tr> <td style="border:1px solid #000000;padding:2px;">Current driver circuit PCB</td> </tr> </tbody> </table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_kdumont, e14presents_katiedumont, element14 presents, music, friday_release</div> Episode 525: Demonstrating Magnetic Fields with Helmholtz Coils in a Snow Globehttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525/revision/1Fri, 19 Nov 2021 19:03:01 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e8ae6201-2fb6-4c6f-8336-b5a7da7b695bmigration.userhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27338/demonstrating-magnetic-fields-with-helmholtz-coils-in-a-snow-globe----episode-525#commentsRevision 1 posted to Documents by migration.user on 11/19/2021 7:03:01 PM<br /> <div style="background:#ffffff;padding:14px 16px 16px 18px;margin:0;vertical-align:top;border:1px solid #dadada;"><div style="float:left;display:inline-block;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div><div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">DIY Helmholtz Coil Snow Globe</span><p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p></div></div><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;"><span id="b20e55cc_496d_49e7_9725_3e132d6860c5"><span><a href="https://www.youtube.com/watch?v=IfRoS-Kt4ec">www.youtube.com/watch</a></span></span></p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;border:1px solid #b8d7e5;background-color:#e9f6fc;padding:8px;max-width:744px;"><span style="color:#222222;font-family:Arial, Helvetica, sans-serif;font-size:small;">Helmholtz coils are a common tool for testing with magnetic fields due to their capability to generate an even magnetic field. Comprised of two rings of the same size, wrapped with the same amount of magnetic wire around each, and placed the radius width of the rings apart, Helmholtz coils generate an even sphere of magnetic field between the two coils when the coils are driven with a constant current source. This project attempts to make that magnetic field “visible&quot; by placing a mini set of Helmholtz coils in a snow globe with ferrite shavings.</span></p><p style="margin:0;padding:0px;">&nbsp;</p><h2><span style="color:#3334ca;">Supplemental Content:</span></h2><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;"><span style="color:#303030;">CAD Files</span></p><ul><li><a class="jive-link-external-small" href="https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232" rel="nofollow ugc noopener" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" target="_blank">https://cad.onshape.com/documents/c1cdfa4b964cf80153ad6bcb/w/5de2ba908e2c035b8df96870/e/24599d590dabcabb24962a8b?renderMode=0&amp;uiState=6178ba7954c4f72c8230f232</a></li><li><a class="jive-link-external-small" href="https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255" rel="nofollow ugc noopener" style="color:#1155cc;font-family:Arial, Helvetica, sans-serif;font-size:small;" target="_blank">https://cad.onshape.com/documents/39cb0cf49bf49ef52cdd5d6f/w/e626e02a9c3018e91fc99f13/e/36a5e50dc19c3e3139f97c85?renderMode=0&amp;uiState=6178bab49869c66c93997255</a></li></ul><p style="margin:0;padding:0px;">&nbsp;</p><h2><span style="color:#3334ca;">Bill of Materials</span></h2><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder mce-item-table" style="border:1px solid #C6C6C6;"><thead><tr><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Product Name</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Manufacturer</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Quantity</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-ljpPmi4d-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1,1651581~1,2336809~1,1843766~2,3229640~2&amp;nsku=47AC4973~1,28Y4988~1,02AH9025~1,48AC7804~1,45J0634~1,62X0621~1,12T1471~2,97AC1038~2,56AC4564~1,48AC8172~2,52X6819~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1,1651581~1,2336809~1,1843766~2,3229640~2&amp;nsku=47AC4973~1,28Y4988~1,02AH9025~1,48AC7804~1,45J0634~1,62X0621~1,12T1471~2,97AC1038~2,56AC4564~1,48AC8172~2,52X6819~1&amp;COM=noscript" target="_blank">Buy Kit</a></span><span class="e14-init-hidden" id="addProduct-ljpPmi4d-unlinked">Buy Kit</span></span></th></tr></thead><tbody><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">GKX00006 -&nbsp; Development Kit, Arduino MKR1000 IoT Bundle, Components Kit (EXAMPLE)</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">ARDUINO</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-U7TCB2iQ-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1&amp;nsku=47AC4973~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2830996~1&amp;nsku=47AC4973~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-U7TCB2iQ-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">ST-PH 2-Pin SMT Right Angle Connector[ID:1769]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-C7YhyWW2-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=28Y4988~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=28Y4988~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-C7YhyWW2-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Short Female Header Kit for ItsyBitsy[ID:4174]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-BXawpPdE-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=02AH9025~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=02AH9025~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-BXawpPdE-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Short Feather Male Headers - 12-pin and 16-pin Male Header Set[ID:3002]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-1rMZ8e7M-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC7804~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC7804~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-1rMZ8e7M-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">BZX84C2V4LT1G - Zener Single Diode, 2.4 V, 225 mW, SOT-23, 8 %, 3 Pins, 150 °C</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">onsemi</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-XRvcodjo-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1651581~1&amp;nsku=45J0634~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1651581~1&amp;nsku=45J0634~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-XRvcodjo-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">MMBT3904,215 - Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 250 mW, TO-236AB, Surface Mount</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">NEXPERIA</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-HzWOSudc-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2336809~1&amp;nsku=62X0621~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2336809~1&amp;nsku=62X0621~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-HzWOSudc-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown" id="addProduct-6Ymzxn2e-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1843766&amp;nsku=12T1471&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1843766&amp;nsku=12T1471&amp;COM=noscript" target="_blank">B530C-13-F</a></span><span class="e14-init-hidden" id="addProduct-6Ymzxn2e-unlinked">B530C-13-F</span></span> - Schottky Rectifier, 30 V, 5 A, Single, DO-214AB (SMC), 2 Pins, 550 mV</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">DIODES INC.</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">2</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-k2thjRxD-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1843766~2&amp;nsku=12T1471~2&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1843766~2&amp;nsku=12T1471~2&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-k2thjRxD-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">RQ73C1J137RBTDF - SMD Chip Resistor, 137 ohm, ± 0.1%, 150 mW, 0603 [1608 Metric], Thin Film</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">HOLSWORTHY - TE CONNECTIVITY</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">2</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-dkn3IDL4-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=3229640~2&amp;nsku=97AC1038~2&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=3229640~2&amp;nsku=97AC1038~2&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-dkn3IDL4-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">DIY Snow Globe Kit (108mm Diameter) [Adafruit ID:3722]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-jGvQQkeF-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=56AC4564~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=56AC4564~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-jGvQQkeF-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Enameled Copper Magnet Wire – 11 meters / 0.1mm diameter[Adafruit ID:3522]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">2</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-NiTtQssp-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC8172~2&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=48AC8172~2&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-NiTtQssp-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Lithium Ion Polymer Battery - 3.7v 500mAh [Adafruit ID:1578]</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Adafruit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-evS3AOvN-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=52X6819~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=&amp;nsku=52X6819~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-evS3AOvN-unlinked">Buy Now</span></span></td></tr></tbody></table><p style="margin:0;padding:0px;">&nbsp;</p><h2><span style="color:#3334ca;">Additional Parts:</span></h2><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder" style="border:1px solid #000000;width:100%;"><thead><tr><th style="border:1px solid black;border:1px solid #000000;padding:2px;color:#ffffff;background-color:#6690bc;text-align:left;" valign="middle"><strong>Product Name</strong></th></tr></thead><tbody><tr><td style="border:1px solid black;border:1px solid #000000;padding:2px;">3D Printed Rings with base</td></tr><tr><td style="border:1px solid black;border:1px solid #000000;padding:2px;">Mineral oil</td></tr><tr><td style="border:1px solid black;border:1px solid #000000;padding:2px;">Ferrite shavings</td></tr><tr><td style="border:1px solid black;border:1px solid #000000;padding:2px;">Current driver circuit PCB</td></tr></tbody></table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: e14presents_kdumont, e14presents_katiedumont, element14 presents, music, friday_release</div>