DIY Low Cost Capacitance Meter Using a 555 Timer -- Episode 580https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580en-USTelligent Community 12DIY Low Cost Capacitance Meter Using a 555 Timer -- Episode 580https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580Fri, 09 Dec 2022 08:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:77b5d9d2-fb61-4f41-9fef-a8c3ebab2ebeMatthttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580#commentsCurrent Revision posted to Documents by Matt on 12/9/2022 8:24:00 AM<br /> <p>Measuring capacitance is not easy on the pocket to most hobbyists. That&rsquo;s why I decided to build my own capacitance meter under $5. I used a 555 Timer IC to convert capacitance to frequency, and a Raspberry Pi Pico to display the calibrated capacitance in microfarads.</p> <h3 id="mcetoc_1gjmr4pij0">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=GOkiftQnP_w">www.youtube.com/watch</a></p> <h3 id="mcetoc_1gjmrq3570">Supplemental Content:</h3> <ul> <li>Download Code and SVG Files:&nbsp;<a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/146955" data-e14adj="t">Episode 580 Resources</a></li> </ul> <p></p> <h3 id="mcetoc_1gjms81ik1">Bill of Materials</h3> <p></p> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-87ae1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332,3006909~5,2063209,1169601~5,1169604~5&nsku=22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5&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('87ae1'));" data-farnell="3643332,3006909~5,2063209,1169601~5,1169604~5" data-newark="22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",undefined~5,,undefined~5,undefined~5" data-avnetema=",undefined~5,,undefined~5,undefined~5" data-avnetasia=",undefined~5,,undefined~5,undefined~5" >Buy Kit</a> </th> </tr> <tr> <td>RASPBERRY-PI Raspberry Pi Pico Board, RP2040, 32 bit, ARM Cortex-M0+</td> <td>RASPBERRY-PI</td> <td>1</td> <td><a id="e14-product-link-519de" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332&nsku=22AJ1097&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('519de'));" data-farnell="3643332" data-newark="22AJ1097" data-comoverride="" data-cmpoverride="" data-cpc="SC17106" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>TEXAS INSTRUMENTS Timer, Single, Precision, 100 kHz, PDIP-8</td> <td>TEXAS INSTRUMENTS</td> <td>5</td> <td><a id="e14-product-link-50008" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3006909&nsku=17AH9212&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('50008'));" data-farnell="3006909" data-newark="17AH9212" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MIDAS Alphanumeric LCD, 16 x 2, White on Blue, 3V to 5V, I2C, English, Japanese, Transmissive</td> <td>MIDAS</td> <td>1</td> <td><a id="e14-product-link-70e48" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2063209&nsku=77T3012&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('70e48'));" data-farnell="2063209" data-newark="77T3012" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO Crocodile Clip, PVC, 1 A, Red</td> <td>MULTICOMP PRO</td> <td>5</td> <td><a id="e14-product-link-00634" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1169601&nsku=20M4224&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('00634'));" data-farnell="1169601" data-newark="20M4224" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO Crocodile Clip, 1 A, Black</td> <td>MULTICOMP PRO</td> <td>5</td> <td><a id="e14-product-link-45975" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1169604&nsku=20M4231&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('45975'));" data-farnell="1169604" data-newark="20M4231" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</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/" data-e14adj="t"><img alt="image" 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 Discrete Logic LED Countdown Timer</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a></span>&nbsp; <strong>|</strong>&nbsp; <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/5385/vcp-biography-surbhika" data-e14adj="t">About Surbhika</a>&nbsp;<span style="padding-right:5px;"></span><strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/" data-e14adj="t">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: capacitance meter, cheap DIY, raspberry pi pico, 555 timer, e14p_SR, friday_release</div> Episode 580: DIY Low Cost Capacitance Meter Using a 555 Timerhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580/revision/3Fri, 09 Dec 2022 14:40:04 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:77b5d9d2-fb61-4f41-9fef-a8c3ebab2ebepchanhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580#commentsRevision 3 posted to Documents by pchan on 12/9/2022 2:40:04 PM<br /> <p>Measuring capacitance is not easy on the pocket to most hobbyists. That&rsquo;s why I decided to build my own capacitance meter under $5. I used a 555 Timer IC to convert capacitance to frequency, and a Raspberry Pi Pico to display the calibrated capacitance in microfarads.</p> <h3 id="mcetoc_1gjmr4pij0">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=GOkiftQnP_w">www.youtube.com/watch</a></p> <h3 id="mcetoc_1gjmrq3570">Supplemental Content:</h3> <ul> <li>Download Code and SVG Files:&nbsp;<a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/146955">Episode 580 Resources</a></li> </ul> <p></p> <h3 id="mcetoc_1gjms81ik1">Bill of Materials</h3> <p></p> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-80f81" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332,3006909~5,2063209,1169601~5,1169604~5&nsku=22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5&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('80f81'));" data-farnell="3643332,3006909~5,2063209,1169601~5,1169604~5" data-newark="22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",undefined~5,,undefined~5,undefined~5" data-avnetema=",undefined~5,,undefined~5,undefined~5" data-avnetasia=",undefined~5,,undefined~5,undefined~5" >Buy Kit</a> </th> </tr> <tr> <td>RASPBERRY-PI Raspberry Pi Pico Board, RP2040, 32 bit, ARM Cortex-M0+</td> <td>RASPBERRY-PI</td> <td>1</td> <td><a id="e14-product-link-82c2d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332&nsku=22AJ1097&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('82c2d'));" data-farnell="3643332" data-newark="22AJ1097" data-comoverride="" data-cmpoverride="" data-cpc="SC17106" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>TEXAS INSTRUMENTS Timer, Single, Precision, 100 kHz, PDIP-8</td> <td>TEXAS INSTRUMENTS</td> <td>5</td> <td><a id="e14-product-link-7fe15" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3006909&nsku=17AH9212&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('7fe15'));" data-farnell="3006909" data-newark="17AH9212" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MIDAS Alphanumeric LCD, 16 x 2, White on Blue, 3V to 5V, I2C, English, Japanese, Transmissive</td> <td>MIDAS</td> <td>1</td> <td><a id="e14-product-link-cd1dc" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2063209&nsku=77T3012&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('cd1dc'));" data-farnell="2063209" data-newark="77T3012" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO Crocodile Clip, PVC, 1 A, Red</td> <td>MULTICOMP PRO</td> <td>5</td> <td><a id="e14-product-link-14888" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1169601&nsku=20M4224&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('14888'));" data-farnell="1169601" data-newark="20M4224" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO Crocodile Clip, 1 A, Black</td> <td>MULTICOMP PRO</td> <td>5</td> <td><a id="e14-product-link-31f0b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1169604&nsku=20M4231&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('31f0b'));" data-farnell="1169604" data-newark="20M4231" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</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="image" 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 Discrete Logic LED Countdown Timer</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="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/5385/vcp-biography-surbhika">About Surbhika</a>&nbsp;<span style="padding-right:5px;"></span><strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: capacitance meter, cheap DIY, raspberry pi pico, 555 timer, e14p_SR, friday_release</div> Episode 580: DIY Low Cost Capacitance Meter Using a 555 Timerhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580/revision/2Wed, 07 Dec 2022 18:09:11 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:77b5d9d2-fb61-4f41-9fef-a8c3ebab2ebetariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580#commentsRevision 2 posted to Documents by tariq.ahmad on 12/7/2022 6:09:11 PM<br /> <p>Measuring capacitance is not easy on the pocket to most hobbyists. That&rsquo;s why I decided to build my own capacitance meter under $5. I used a 555 Timer IC to convert capacitance to frequency, and a Raspberry Pi Pico to display the calibrated capacitance in microfarads.</p> <h3 id="mcetoc_1gjmr4pij0">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=GOkiftQnP_w">www.youtube.com/watch</a></p> <h3 id="mcetoc_1gjmrq3570">Supplemental Content:</h3> <ul> <li>Download Code and SVG Files:&nbsp;<a href="/challenges-projects/element14-presents/secret-element14-presents/m/files/146955">Episode 580 Resources</a></li> </ul> <p></p> <h3 id="mcetoc_1gjms81ik1">Bill of Materials</h3> <p></p> <table class="e14-product-bom-main"> <tbody> <tr> <th>Product Name</th> <th>Manufacturer</th> <th>Quantity</th> <th><a id="e14-product-link-99721" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332,3006909~5,2063209,1169601~5,1169604~5&nsku=22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5&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('99721'));" data-farnell="3643332,3006909~5,2063209,1169601~5,1169604~5" data-newark="22AJ1097,17AH9212~5,77T3012,20M4224~5,20M4231~5" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea=",undefined~5,,undefined~5,undefined~5" data-avnetema=",undefined~5,,undefined~5,undefined~5" data-avnetasia=",undefined~5,,undefined~5,undefined~5" >Buy Kit</a> </th> </tr> <tr> <td>RASPBERRY-PI Raspberry Pi Pico Board, RP2040, 32 bit, ARM Cortex-M0+</td> <td>RASPBERRY-PI</td> <td>1</td> <td><a id="e14-product-link-2c7a1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3643332&nsku=22AJ1097&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('2c7a1'));" data-farnell="3643332" data-newark="22AJ1097" data-comoverride="" data-cmpoverride="" data-cpc="SC17106" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>TEXAS INSTRUMENTS Timer, Single, Precision, 100 kHz, PDIP-8</td> <td>TEXAS INSTRUMENTS</td> <td>5</td> <td><a id="e14-product-link-79cc3" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3006909&nsku=17AH9212&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('79cc3'));" data-farnell="3006909" data-newark="17AH9212" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MIDAS Alphanumeric LCD, 16 x 2, White on Blue, 3V to 5V, I2C, English, Japanese, Transmissive</td> <td>MIDAS</td> <td>1</td> <td><a id="e14-product-link-27577" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2063209&nsku=77T3012&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('27577'));" data-farnell="2063209" data-newark="77T3012" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>MULTICOMP PRO Crocodile Clip, PVC, 1 A, Red</td> <td>MULTICOMP PRO</td> <td>5</td> <td><a id="e14-product-link-7cfb4" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1169601&nsku=20M4224&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', 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data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr class="xs-hide"> <td>&nbsp;</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="image" 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 Discrete Logic LED Countdown Timer</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="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/5385/vcp-biography-surbhika">About Surbhika</a>&nbsp;<span style="padding-right:5px;"></span><strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: capacitance meter, cheap DIY, raspberry pi pico, 555 timer, e14p_SR</div> Episode 580: DIY Low Cost Capacitance Meter Using a 555 Timerhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580/revision/1Wed, 07 Dec 2022 17:46:54 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:77b5d9d2-fb61-4f41-9fef-a8c3ebab2ebetariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27894/diy-low-cost-capacitance-meter-using-a-555-timer----episode-580#commentsRevision 1 posted to Documents by tariq.ahmad on 12/7/2022 5:46:54 PM<br /> <p>Measuring capacitance is not easy on the pocket to most hobbyists. That&rsquo;s why I decided to build my own capacitance meter under $5. I used a 555 Timer IC to convert capacitance to frequency, and a Raspberry Pi Pico to display the calibrated capacitance in microfarads.</p> <h3 id="mcetoc_1gjmr4pij0">Watch the Video:</h3> <p><a href="https://www.youtube.com/watch?v=GOkiftQnP_w">www.youtube.com/watch</a></p><div style="clear:both;"></div>