https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47en-USTelligent Community 12https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47Wed, 01 May 2019 07:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:6a65e495-6b98-4968-a4e6-9f1faa9a07b6Matthttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47#commentsCurrent Revision posted to Documents by Matt on 5/1/2019 7:24:00 AM<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="/e14/assets/legacy/2018/e14PresentsJune818.png" 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%;"> <p style="margin:0;"><span style="font-size:14pt;"><strong>Soldering A Voice Changer Kit</strong></span></p> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/" data-e14adj="t">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a>&nbsp; | <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4111/vcp-biography-karen" data-e14adj="t">VCP Biography: Karen</a> <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> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=3rPPVt6RSIY">www.youtube.com/watch</a></span></p> <p style="margin:0;"></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:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">The last episode we learned all about sound components, those that make them and those that interpret them. In this episode, Karen assembles as Velleman MK171 Voice Changer kit. She walks you through the instructions, reviewing symbols, components, and concepts learned in previous episodes. This circuit has uses 2 IC chips, LM386N op-amp, and an HT8950, voice modulator chip. When sound is interpreted by the microphone, the signal goes through these ICs, is processed, and changed to modulate the user&rsquo;s voice. Using the tac switch buttons on the PCB, the voice can be changed, adding vibrato, adjusting the pitch up and down, or made to sound like a robot. The circuit also includes variable resistors that allow for changing the microphone sensitivity and the speaker&rsquo;s output volume. Batteries and speaker not included. </span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1h0l1ea2i0"><span style="color:#3334ca;">Bill of Materials</span></h2> <p></p> <h3 id="mcetoc_1h0nh0u5c0">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-9fd6d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2804266,1502730,1504105,78Y4341&nsku=43W7546,61M7026,94M6041,78Y4341&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('9fd6d'));" data-farnell="2804266,1502730,1504105,78Y4341" data-newark="43W7546,61M7026,94M6041,78Y4341" data-comoverride="" data-cmpoverride="" data-cpc=",,," data-avnetemea=",,," data-avnetema=",,," data-avnetasia=",,," >Buy Kit</a> </th> </tr> <tr> <td>Digital Voice Recorder Single Message Kit</td> <td>Vellemam</td> <td>1</td> <td><a id="e14-product-link-f007e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2804266&nsku=43W7546&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('f007e'));" data-farnell="2804266" data-newark="43W7546" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Speaker, Micro, Dynamic, 0.3 W, 8 ohm, 92 dB, 560 Hz to 7 kHz</td> <td>Kignstate</td> <td>1</td> <td><a id="e14-product-link-598b6" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1502730&nsku=61M7026&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('598b6'));" data-farnell="1502730" data-newark="61M7026" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Speaker, Mini, Dynamic, 2 W, 8 ohm, 200 Hz to 20 kHz</td> <td>Multicomp Pro</td> <td>1</td> <td><a id="e14-product-link-3cd85" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1504105&nsku=94M6041&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('3cd85'));" data-farnell="1504105" data-newark="94M6041" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Battery, 9 V, PP3, Alkaline, 565 mAh, Snap Contact</td> <td>Multicomp Pro</td> <td>1</td> <td><a id="e14-product-link-6ac51" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=78Y4341&nsku=78Y4341&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('6ac51'));" data-farnell="78Y4341" data-newark="78Y4341" data-comoverride="" data-cmpoverride="" data-cpc="undefined" 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> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;"><br />Attachments:</p> <div class="migration-injected-attachments"> <div></div> <table style="border:0;"> <tbody> <tr> <td width="160"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280734" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/47-Electronic-Voice-Changer-Script.pdf">community.element14.com/.../47-Electronic-Voice-Changer-Script.pdf</a></span></td> <td><span style="font-size:80%;">47 Electronic Voice Changer Script.pdf</span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280735" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/mk171.jpg"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/mk171.jpg-15x200.jpg?sv=2016-05-31&amp;sr=b&amp;sig=0gE4VEDk1el27EXj%2BJ26msHJ%2B4vj0B0iMl%2BgLIp2U6I%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=6I8zVXjN5Xz0Z0qgxqFY4Q==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280736" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Robot-Voice.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Robot%20Voice.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=yu2SocNdlZVe6%2FKgFGmEDBZmB7tFrXrWBpo7OtNbnhw%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=O8ZyKicrgxqKI0jgjtQx7w==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280737" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer_2D00_-Circuit-Diagram.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer-%20Circuit%20Diagram.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=K1ni2MBDFk1G4vMMgXrXUqzUBmN%2FVJOMBMHD3woVkrg%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=uGlUiA3zjpkNQ31mJwftDw==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280738" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer-Instruction-Sheet.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer%20Instruction%20Sheet.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=kc3ut91Gxp7w1TRYKmqBV7IiX9q8SpRRBP1cGa68QEQ%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=EUR+2cVcttjk0914g3kKoA==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> </tbody> </table> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: element14 presesents, 9 v battery, e14presents_makerkaren, voice changer kit, the learning circuit, thelearningcircuit, speaker</div> https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47/revision/3Thu, 18 May 2023 13:33:54 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:6a65e495-6b98-4968-a4e6-9f1faa9a07b6kellyhensenhttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47#commentsRevision 3 posted to Documents by kellyhensen on 5/18/2023 1:33:54 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="/e14/assets/legacy/2018/e14PresentsJune818.png"><img alt="image" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span style="font-size:14pt;"><strong>Soldering A Voice Changer Kit</strong></span></p> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a>&nbsp; | <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4111/vcp-biography-karen">VCP Biography: Karen</a> <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;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=3rPPVt6RSIY">www.youtube.com/watch</a></span></p> <p style="margin:0;"></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:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">The last episode we learned all about sound components, those that make them and those that interpret them. In this episode, Karen assembles as Velleman MK171 Voice Changer kit. She walks you through the instructions, reviewing symbols, components, and concepts learned in previous episodes. This circuit has uses 2 IC chips, LM386N op-amp, and an HT8950, voice modulator chip. When sound is interpreted by the microphone, the signal goes through these ICs, is processed, and changed to modulate the user&rsquo;s voice. Using the tac switch buttons on the PCB, the voice can be changed, adding vibrato, adjusting the pitch up and down, or made to sound like a robot. The circuit also includes variable resistors that allow for changing the microphone sensitivity and the speaker&rsquo;s output volume. Batteries and speaker not included. </span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1h0l1ea2i0"><span style="color:#3334ca;">Bill of Materials</span></h2> <p></p> <h3 id="mcetoc_1h0nh0u5c0">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-364df" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2804266,1502730,1504105,78Y4341&nsku=43W7546,61M7026,94M6041,78Y4341&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('364df'));" data-farnell="2804266,1502730,1504105,78Y4341" data-newark="43W7546,61M7026,94M6041,78Y4341" data-comoverride="" data-cmpoverride="" data-cpc=",,," data-avnetemea=",,," data-avnetema=",,," data-avnetasia=",,," >Buy Kit</a> </th> </tr> <tr> <td>Digital Voice Recorder Single Message Kit</td> <td>Vellemam</td> <td>1</td> <td><a id="e14-product-link-d9e39" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2804266&nsku=43W7546&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('d9e39'));" data-farnell="2804266" data-newark="43W7546" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Speaker, Micro, Dynamic, 0.3 W, 8 ohm, 92 dB, 560 Hz to 7 kHz</td> <td>Kignstate</td> <td>1</td> <td><a id="e14-product-link-aff58" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1502730&nsku=61M7026&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('aff58'));" data-farnell="1502730" data-newark="61M7026" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Speaker, Mini, Dynamic, 2 W, 8 ohm, 200 Hz to 20 kHz</td> <td>Multicomp Pro</td> <td>1</td> <td><a id="e14-product-link-83f28" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=1504105&nsku=94M6041&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('83f28'));" data-farnell="1504105" data-newark="94M6041" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" >Buy Now</a> </td> </tr> <tr> <td>Battery, 9 V, PP3, Alkaline, 565 mAh, Snap Contact</td> <td>Multicomp Pro</td> <td>1</td> <td><a id="e14-product-link-222a2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=78Y4341&nsku=78Y4341&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('222a2'));" data-farnell="78Y4341" data-newark="78Y4341" data-comoverride="" data-cmpoverride="" data-cpc="undefined" 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> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;"><br />Attachments:</p> <div class="migration-injected-attachments"> <div></div> <table style="border:0;"> <tbody> <tr> <td width="160"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280734" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/47-Electronic-Voice-Changer-Script.pdf">community.element14.com/.../47-Electronic-Voice-Changer-Script.pdf</a></span></td> <td><span style="font-size:80%;">47 Electronic Voice Changer Script.pdf</span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280735" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/mk171.jpg"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/mk171.jpg-15x200.jpg?sv=2016-05-31&amp;sr=b&amp;sig=0gE4VEDk1el27EXj%2BJ26msHJ%2B4vj0B0iMl%2BgLIp2U6I%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=6I8zVXjN5Xz0Z0qgxqFY4Q==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280736" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Robot-Voice.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Robot%20Voice.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=yu2SocNdlZVe6%2FKgFGmEDBZmB7tFrXrWBpo7OtNbnhw%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=O8ZyKicrgxqKI0jgjtQx7w==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280737" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer_2D00_-Circuit-Diagram.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer-%20Circuit%20Diagram.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=K1ni2MBDFk1G4vMMgXrXUqzUBmN%2FVJOMBMHD3woVkrg%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=uGlUiA3zjpkNQ31mJwftDw==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280738" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer-Instruction-Sheet.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer%20Instruction%20Sheet.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=kc3ut91Gxp7w1TRYKmqBV7IiX9q8SpRRBP1cGa68QEQ%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=EUR+2cVcttjk0914g3kKoA==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> </tbody> </table> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: element14 presesents, 9 v battery, e14presents_makerkaren, voice changer kit, the learning circuit, thelearningcircuit, speaker</div> https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47/revision/2Wed, 17 May 2023 14:27:22 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:6a65e495-6b98-4968-a4e6-9f1faa9a07b6kellyhensenhttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47#commentsRevision 2 posted to Documents by kellyhensen on 5/17/2023 2:27:22 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="/e14/assets/legacy/2018/e14PresentsJune818.png"><img alt="image" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span style="font-size:14pt;"><strong>Soldering A Voice Changer Kit</strong></span></p> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a>&nbsp; | <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4111/vcp-biography-karen">VCP Biography: Karen</a> <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;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=3rPPVt6RSIY">www.youtube.com/watch</a></span></p> <p style="margin:0;"></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:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">The last episode we learned all about sound components, those that make them and those that interpret them. In this episode, Karen assembles as Velleman MK171 Voice Changer kit. She walks you through the instructions, reviewing symbols, components, and concepts learned in previous episodes. This circuit has uses 2 IC chips, LM386N op-amp, and an HT8950, voice modulator chip. When sound is interpreted by the microphone, the signal goes through these ICs, is processed, and changed to modulate the user&rsquo;s voice. Using the tac switch buttons on the PCB, the voice can be changed, adding vibrato, adjusting the pitch up and down, or made to sound like a robot. The circuit also includes variable resistors that allow for changing the microphone sensitivity and the speaker&rsquo;s output volume. Batteries and speaker not included. </span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;padding:0px;">&nbsp;</p> <h2 id="mcetoc_1h0l1ea2i0"><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" width="100%"> <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-C3ua6ERZ-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=2804269~1,1502730~1,1504105~1,2503729~1&amp;nsku=43W7546~1,61M7026~1,94M6041~1,78Y4341~1&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=2804269~1,1502730~1,1504105~1,2503729~1&amp;nsku=43W7546~1,61M7026~1,94M6041~1,78Y4341~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Kit</a></span><span id="addProduct-C3ua6ERZ-unlinked" class="e14-init-hidden">Buy Kit</span></span></th> </tr> </thead> <tbody> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Voice Changer Kit</td> <td style="border:1px solid #C6C6C6;padding:6px;">Velleman</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-dxkNUHc2-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=2804269~1&amp;nsku=43W7546~1&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=2804266~1&amp;nsku=43W7546~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-dxkNUHc2-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Speaker (Option 1)</td> <td style="border:1px solid #C6C6C6;padding:6px;">Kingstate</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-tvpLeMKt-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=1502730~1&amp;nsku=61M7026~1&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=1502730~1&amp;nsku=61M7026~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-tvpLeMKt-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">Speaker (Option 2)</td> <td style="border:1px solid #C6C6C6;padding:6px;">Pro Signal</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-DRLbFzKL-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=1504105~1&amp;nsku=94M6041~1&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=1504105~1&amp;nsku=94M6041~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-DRLbFzKL-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> <tr> <td style="border:1px solid #C6C6C6;padding:6px;">9V Battery</td> <td style="border:1px solid #C6C6C6;padding:6px;">Pro Elec</td> <td style="border:1px solid #C6C6C6;padding:6px;">1</td> <td style="border:1px solid #C6C6C6;padding:6px;"><span><span id="addProduct-cKqIOkdE-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=2503729~1&amp;nsku=78Y4341~1&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=2503729~1&amp;nsku=78Y4341~1&amp;COM=noscript" rel="noopener noreferrer" target="_blank">Buy Now</a></span><span id="addProduct-cKqIOkdE-unlinked" class="e14-init-hidden">Buy Now</span></span></td> </tr> </tbody> </table> <div class="migration-injected-attachments"> <div style="font-weight:bold;margin:15px 0 5px 0;">Attachments:</div> <div></div> <table style="border:0;"> <tbody> <tr> <td width="160"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280734" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/47-Electronic-Voice-Changer-Script.pdf">community.element14.com/.../47-Electronic-Voice-Changer-Script.pdf</a></span></td> <td><span style="font-size:80%;">47 Electronic Voice Changer Script.pdf</span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280735" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/mk171.jpg"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/mk171.jpg-15x200.jpg?sv=2016-05-31&amp;sr=b&amp;sig=0gE4VEDk1el27EXj%2BJ26msHJ%2B4vj0B0iMl%2BgLIp2U6I%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=6I8zVXjN5Xz0Z0qgxqFY4Q==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280736" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Robot-Voice.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Robot%20Voice.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=yu2SocNdlZVe6%2FKgFGmEDBZmB7tFrXrWBpo7OtNbnhw%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=O8ZyKicrgxqKI0jgjtQx7w==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280737" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer_2D00_-Circuit-Diagram.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer-%20Circuit%20Diagram.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=K1ni2MBDFk1G4vMMgXrXUqzUBmN%2FVJOMBMHD3woVkrg%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=uGlUiA3zjpkNQ31mJwftDw==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> <tr> <td colspan="2"><span id="attid_https://www.element14.com/community/api/core/v3/attachments/280738" class="_se_attachment"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer-Instruction-Sheet.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer%20Instruction%20Sheet.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=kc3ut91Gxp7w1TRYKmqBV7IiX9q8SpRRBP1cGa68QEQ%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=EUR+2cVcttjk0914g3kKoA==" style="max-height: 200px;max-width: 15px;" /></a></span></td> </tr> </tbody> </table> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: element14 presesents, 9 v battery, e14presents_makerkaren, voice changer kit, the learning circuit, thelearningcircuit, speaker</div> https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47/revision/1Wed, 03 Jul 2019 13:43:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:6a65e495-6b98-4968-a4e6-9f1faa9a07b6tariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4123/soldering-a-voice-changer-kit----the-learning-circuit-47#commentsRevision 1 posted to Documents by tariq.ahmad on 7/3/2019 1:43:36 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="/e14/assets/legacy/2018/e14PresentsJune818.png"><img alt="image" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div><div style="display:inline-block;vertical-align:top;width:70%;"><p style="margin:0;"><span style="font-size:14pt;"><strong>Soldering A Voice Changer Kit</strong></span></p><p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a>&nbsp; | <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4111/vcp-biography-karen">VCP Biography: Karen</a> <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;padding:0px;">&nbsp;</p><p style="margin:0;"></p><span><a href="https://www.youtube.com/watch?v=3rPPVt6RSIY">www.youtube.com/watch</a></span><p style="margin:0;"></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:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">The last episode we learned all about sound components, those that make them and those that interpret them. In this episode, Karen assembles as Velleman MK171 Voice Changer kit. She walks you through the instructions, reviewing symbols, components, and concepts learned in previous episodes. This circuit has uses 2 IC chips, LM386N op-amp, and an HT8950, voice modulator chip. When sound is interpreted by the microphone, the signal goes through these ICs, is processed, and changed to modulate the user’s voice. Using the tac switch buttons on the PCB, the voice can be changed, adding vibrato, adjusting the pitch up and down, or made to sound like a robot. The circuit also includes variable resistors that allow for changing the microphone sensitivity and the speaker’s output volume. Batteries and speaker not included. </span></p><p style="margin:0;padding:0px;">&nbsp;</p><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;" width="100%"><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-C3ua6ERZ-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2804269~1,1502730~1,1504105~1,2503729~1&amp;nsku=43W7546~1,61M7026~1,94M6041~1,78Y4341~1&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=2804269~1,1502730~1,1504105~1,2503729~1&amp;nsku=43W7546~1,61M7026~1,94M6041~1,78Y4341~1&amp;COM=noscript" target="_blank">Buy Kit</a></span><span class="e14-init-hidden" id="addProduct-C3ua6ERZ-unlinked">Buy Kit</span></span></th></tr></thead><tbody><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Voice Changer Kit</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Velleman</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-dxkNUHc2-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2804269~1&amp;nsku=43W7546~1&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=2804269~1&amp;nsku=43W7546~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-dxkNUHc2-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Speaker (Option 1)</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Kingstate</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-tvpLeMKt-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1502730~1&amp;nsku=61M7026~1&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=1502730~1&amp;nsku=61M7026~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-tvpLeMKt-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Speaker (Option 2)</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Pro Signal</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-DRLbFzKL-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1504105~1&amp;nsku=94M6041~1&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=1504105~1&amp;nsku=94M6041~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-DRLbFzKL-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">9V Battery</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Pro Elec</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-cKqIOkdE-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2503729~1&amp;nsku=78Y4341~1&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=2503729~1&amp;nsku=78Y4341~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-cKqIOkdE-unlinked">Buy Now</span></span></td></tr></tbody></table> <div class="migration-injected-attachments"><div style="font-weight:bold;margin:15px 0 5px 0;">Attachments:</div><div></div><table style="border:0;"><tbody><tr><td width="160"><span class="_se_attachment" id="attid_https://www.element14.com/community/api/core/v3/attachments/280734"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/47-Electronic-Voice-Changer-Script.pdf">community.element14.com/.../47-Electronic-Voice-Changer-Script.pdf</a></span></td><td><span style="font-size:80%;">47 Electronic Voice Changer Script.pdf</span></td></tr><tr><td colspan="2"><span class="_se_attachment" id="attid_https://www.element14.com/community/api/core/v3/attachments/280735"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/mk171.jpg"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/mk171.jpg-15x200.jpg?sv=2016-05-31&amp;sr=b&amp;sig=0gE4VEDk1el27EXj%2BJ26msHJ%2B4vj0B0iMl%2BgLIp2U6I%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=6I8zVXjN5Xz0Z0qgxqFY4Q==" style="max-height: 200px;max-width: 15px;" /></a></span></td></tr><tr><td colspan="2"><span class="_se_attachment" id="attid_https://www.element14.com/community/api/core/v3/attachments/280736"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Robot-Voice.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Robot%20Voice.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=yu2SocNdlZVe6%2FKgFGmEDBZmB7tFrXrWBpo7OtNbnhw%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=O8ZyKicrgxqKI0jgjtQx7w==" style="max-height: 200px;max-width: 15px;" /></a></span></td></tr><tr><td colspan="2"><span class="_se_attachment" id="attid_https://www.element14.com/community/api/core/v3/attachments/280737"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer_2D00_-Circuit-Diagram.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer-%20Circuit%20Diagram.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=K1ni2MBDFk1G4vMMgXrXUqzUBmN%2FVJOMBMHD3woVkrg%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=uGlUiA3zjpkNQ31mJwftDw==" style="max-height: 200px;max-width: 15px;" /></a></span></td></tr><tr><td colspan="2"><span class="_se_attachment" id="attid_https://www.element14.com/community/api/core/v3/attachments/280738"><a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-03-35/Voice-Changer-Instruction-Sheet.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/Voice%20Changer%20Instruction%20Sheet.png-15x200.png?sv=2016-05-31&amp;sr=b&amp;sig=kc3ut91Gxp7w1TRYKmqBV7IiX9q8SpRRBP1cGa68QEQ%3D&amp;se=2026-06-11T23%3A59%3A59Z&amp;sp=r&amp;_=EUR+2cVcttjk0914g3kKoA==" style="max-height: 200px;max-width: 15px;" /></a></span></td></tr></tbody></table></div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: element14 presesents, 9 v battery, e14presents_makerkaren, voice changer kit, the learning circuit, thelearningcircuit, speaker</div>