adafruit (Posts tagged circuitdesign)

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rel="canonical" href="https://www.tumblr.com/adafruit/tagged/circuitdesign" /></head> <body data-urlencoded-name="adafruit" class="regular index-page display-related-posts">  <h1 style="display: none;">adafruit (Posts tagged circuitdesign)</h1> <div class="app-nag"> <div class="app-nag-header clearfix"> <div class="app-nag-icon"> <div class="app-nag-icon-ios"> <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 1024 1024" enable-background="new 0 0 1024 1024" xml:space="preserve"> <path fill="#36465D" d="M1024,771c0,139.2-113.8,253-253,253H253C113.8,1024,0,910.2,0,771V253C0,113.8,113.8,0,253,0h518 c139.2,0,253,113.8,253,253V771z"/> <path fill="none" stroke="#FFF100" stroke-width="4" stroke-miterlimit="10" d="M463.9,209.4"/> <path opacity="0.6" fill="#231F20" d="M628.1,681c8.2,0,17.1-1.2,25.8-3.3V530.3h111.6V401.8h-68.6V473H585.4v162.4 C586,676.3,609.1,681,628.1,681z M654.4,250.5h-68.6v94h68.6V250.5z 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c-131.5,0-166.6-100.4-166.6-159.7V462.3c0-1.5-1.2-2.7-2.7-2.7h-63.6c-1.5,0-2.7-1.2-2.7-2.7v-83c0-1.1,0.7-2.1,1.7-2.5 c68-26.5,105.9-79,115.9-160.3c0.6-4.5,4.3-4.6,4.3-4.6h84.9c1.5,0,2.7,1.2,2.7,2.7v145.9c0,1.5,1.2,2.7,2.7,2.7h105.7 c1.5,0,2.7,1.2,2.7,2.7v96.4c0,1.5-1.2,2.7-2.7,2.7H571.3c-1.5,0-2.7,1.2-2.7,2.7l0,173.2c0.6,39,19.5,58.8,56.1,58.8 c14.7,0,31.6-3.4,47.1-9.3c1.4-0.6,3,0.2,3.5,1.6l27,80C702.6,767.7,702.4,768.8,701.6,769.5z"></path> <path opacity="0.5" fill="#2D3F54" d="M328.1,528.9h73.8v-40.2c0-1.3-1.1-2.4-2.4-2.4h-71.4V528.9z"></path> </svg> </div> </div> <div class="app-nag-ratings"> <svg width="181px" height="30px" viewBox="0 0 181 30" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"> <path d="M15.8,25.2 L6.1,29.8 L7.5,19.2 L0.1,11.4 L10.6,9.5 L15.8,0 L20.9,9.5 L31.4,11.4 L24,19.2 L25.4,29.8 L15.8,25.2 Z" fill="#FFC00E"></path> <path d="M52.8,25.2 L43.1,29.8 L44.5,19.2 L37.1,11.4 L47.6,9.5 L52.8,0 L57.9,9.5 L68.4,11.4 L61,19.2 L62.4,29.8 L52.8,25.2 Z" fill="#FFC00E"></path> <path d="M89.8,25.2 L80.1,29.8 L81.5,19.2 L74.1,11.4 L84.6,9.5 L89.8,0 L94.9,9.5 L105.4,11.4 L98,19.2 L99.4,29.8 L89.8,25.2 Z" fill="#FFC00E"></path> <path d="M126.8,25.2 L117.1,29.8 L118.5,19.2 L111.1,11.4 L121.6,9.5 L126.8,0 L131.9,9.5 L142.4,11.4 L135,19.2 L136.4,29.8 L126.8,25.2 Z" fill="#FFC00E"></path> <path d="M163.8,25.2 L154.1,29.8 L155.5,19.2 L148.1,11.4 L158.6,9.5 L163.8,0 L168.9,9.5 L179.4,11.4 L172,19.2 L173.4,29.8 L163.8,25.2 Z" fill="#E7E7E7"></path> <path d="M163.3,25.1 L154.1,29.8 L155.5,19.2 L148.1,11.4 L158.6,9.5 L163.3,0.9 L163.3,25.1 Z" fill="#FFC00E"></path> </g> </svg> <div class="app-nag-ratings-text app-nag-ratings-text-android"> 1.5M ratings </div> <div class="app-nag-ratings-text app-nag-ratings-text-ios"> 277k ratings </div> </div> <div class="app-nag-close-button"> <svg width="15px" height="15px" viewBox="0 0 30 30" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"> <path d="M12.510351,14.6860639 L0,27.1964147 L2.175713,29.3721278 L14.686064,16.8617771 L27.196415,29.3721278 L29.372128,27.1964147 L16.861777,14.6860639 L29.372128,2.1757132 L27.196415,0 L14.686064,12.5103507 L2.175713,0 L0,2.1757132 L12.510351,14.6860639 L12.510351,14.6860639 Z" fill="#D3D3D3"></path> </g> </svg> </div> </div> <div class="app-nag-body"> <h2 class="app-nag-callout">See, that’s what the app is perfect for.</h2> <a class="app-nag-large-button app-nag-app-store-link button blue">Sounds perfect</a> <a class="app-nag-large-button app-nag-app-store-deny">Wahhhh, I don’t wanna</a> </div> </div> <section id="page" class="h-feed"> <div class="header-wrapper avatar-style-circle"> <header id="header" class="top-blog-header"> <div class="header-image-wrapper "> <a href="/" class="header-image parallax cover " 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by Limor & Phillip - no bots, all posts are from either ladyada or pt, blame them :) </span> </div> </div> </header> </div> <div class="nav-wrapper nav-responsive"> <nav class="nav-menu"> <ul class="inline-nav"> <li class="nav-item nav-item--posts"> <a href="/" class="label ">Posts</a> </li> <li class="nav-item nav-item--likes"> <a href="/likes" class="label ">Likes</a> </li> <li class="nav-item nav-item--following"> <a href="/following" class="label ">Following</a> </li> <li class="nav-item nav-item--ask"> <a href="/ask" class="label ">ask an engineer</a> </li> <li class="nav-item nav-item--submit"> <a href="/submit" class="label ">show and tell</a> </li> <li class="nav-item nav-item--archive"> <a href="/archive" class="label external-page">Archive</a> </li> </ul> </nav> </div> <section id="posts" class="content clearfix avatar-style-circle show-nav"> <div class="container"> <div class="main"> <article class="text not-page post-778052164394385408 " data-post-id="778052164394385408" > <div class="post-wrapper clearfix h-entry"> <header class="post-header "> </header> <section class="post"> <div class="post-content"> <div class="body-text e-content"><figure class="tmblr-full" data-orig-height="1080" data-orig-width="1920" data-npf="{"type":"video","provider":"tumblr","url":"https://va.media.tumblr.com/tumblr_st5a62vdA01was4p5_720.mp4","media":{"url":"https://va.media.tumblr.com/tumblr_st5a62vdA01was4p5_720.mp4","type":"video/mp4","width":1920,"height":1080},"poster":[{"url":"https://64.media.tumblr.com/tumblr_st5a62vdA01was4p5_frame1.jpg","type":"image/jpeg","width":1920,"height":1080}],"filmstrip":{"url":"https://64.media.tumblr.com/previews/tumblr_st5a62vdA01was4p5_filmstrip.jpg","type":"image/jpeg","width":2000,"height":112}}"><video controls="controls" autoplay="autoplay" playsinline="playsinline" muted="muted" poster="https://64.media.tumblr.com/tumblr_st5a62vdA01was4p5_frame1.jpg"><source src="https://va.media.tumblr.com/tumblr_st5a62vdA01was4p5_720.mp4" type="video/mp4" /></video></figure><p>Solenoids go clicky-clacky 🔩🔊🤖</p><p>We’re testing out an I2C-to-solenoid driver today. It uses an MCP23017 expander. We like this particular chip for this usage because it has push-pull outputs, making it ideal for driving our N-channel FETs and flyback diodes. The A port connects to the 8 drivers, while the B port remains available for other GPIO purposes. For this demo, whenever we ‘touch’ a pin on port B to ground, the corresponding solenoid triggers provide an easy way to check speed and power usage.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/solenoid">solenoid</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/i2c">i2c</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/mcp23017">mcp23017</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/hardwarehacking">hardwarehacking</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/maker">maker</a> <a class="meta-item tag-link p-category" 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href="https://adafruit.tumblr.com/post/778052164394385408/solenoids-go-clicky-clacky-were-testing-out" title="2 weeks ago" class="meta-item post-date">Mar 14th, 2025</a><time class="dt-published" datetime="2025-03-14 23:12:45"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_778052164394385408"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="778052164394385408">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F778052164394385408%2Fsolenoids-go-clicky-clacky-were-testing-out&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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data-big-photo="https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s1280x1920/bba294f52c3e5657ca73eb9d4720522f15b23dde.jpg" data-big-photo-height="1350" data-big-photo-width="1080"><img class="post_media_photo image" src="https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s1280x1920/bba294f52c3e5657ca73eb9d4720522f15b23dde.jpg" srcset="https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s75x75_c1/8ffe2368e4fbe86a5953206d35b7ffc8d44e4424.jpg 75w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s100x200/6716e29bb0bb9befbce9c14f2665043f208b4ea9.jpg 100w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s250x400/a943be3d83a47fe2cceed8c80f794e90b72edfc3.jpg 250w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s400x600/ff9fe5f6609dedcc6090d83db6f60088d1555351.jpg 400w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s500x750/51d32e255b54e7d85faaf41d629dac6fcde48df6.jpg 500w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s540x810/9e7cf4a48038cfae1aea0de6907b32be56861c3d.jpg 540w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s640x960/cf0803216d0139e40e895e5bb322a93dc9ee26fa.jpg 640w, https://64.media.tumblr.com/16707b5624784f9952986fe703225b31/8a907ba3538155b0-cb/s1280x1920/bba294f52c3e5657ca73eb9d4720522f15b23dde.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>USB-C “Fixer” for Missing CC Pins 🔌⚡🛠️</p><p>We have a few devices missing the 5.1K resistors on the CC pins, which frustratingly don’t work with Mac computers or certain smart USB-C power supplies. To solve this, we designed a small adapter that combines our sunken USB socket </p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.adafruit.com/product/6050"><div class="poster" style="background-image:url(https://64.media.tumblr.com/c47215b99d01197c1eb1c70a49dca9ed/8a907ba3538155b0-d2/s500x750/302fc502d06855bde0db302d57c2c4ac1a4caf88.jpg)"><div class="title">Adafruit Sunken USB Type C Breakout Board</div></div><div class="bottom"><div class="description"> When you want a svelte USB C build, a &#39;sunken&#39; type connector that straddles the PCBA will let you keep your build super slim. This </div><div class="site-name"> adafruit.com </div></div></a></div><p>and USB plug breakout </p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.adafruit.com/product/5978"><div class="poster" style="background-image:url(https://64.media.tumblr.com/8b070546d4b47cdf85a02fe265b8e49f/8a907ba3538155b0-a1/s500x750/aa727dacb52f6bc429edec6042f1f4ba9d1a5542.jpg)"><div class="title">Adafruit USB Type C Plug Breakout</div></div><div class="bottom"><div class="description"> Throw out all those Mini and Micro B USB cables you have in a plastic bin - the next generation of USB connectors is here with&nbsp;USB C! Y </div><div class="site-name"> adafruit.com </div></div></a></div><p>This handy USB-C “fixer” adds the necessary CC resistors and includes a power-good LED indicator. It passes standard USB 2.0 signals (5V, GND, D+, D-) and fits onto any USB-C cable end, ensuring compatibility with a wider range of devices.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usb">usb</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usbc">usbc</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usbfix">usbfix</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/maker">maker</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/tech">tech</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/hardware">hardware</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/diy">diy</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usbadapter">usbadapter</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/fixit">fixit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/hack">hack</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/engineering">engineering</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/powerfix">powerfix</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usbmod">usbmod</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/maccompatible">maccompatible</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/poweradapter">poweradapter</a> <a class="meta-item tag-link p-category" 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https://64.media.tumblr.com/ceae17b36c234ef7e5738621679fe05d/74e666414dd7f409-7c/s500x750/2df9386e3b3971ce5da9f2db7ce1bd122d56184c.jpg 500w, https://64.media.tumblr.com/ceae17b36c234ef7e5738621679fe05d/74e666414dd7f409-7c/s540x810/6731d47ede56c16a58886d0df84d2b53caef9e82.jpg 540w, https://64.media.tumblr.com/ceae17b36c234ef7e5738621679fe05d/74e666414dd7f409-7c/s640x960/5154aa05f1d9444feb1e3d344907e7901aa56891.jpg 640w, https://64.media.tumblr.com/ceae17b36c234ef7e5738621679fe05d/74e666414dd7f409-7c/s1280x1920/5e3dc926fe963d148d2a1ae2d9c8c87462a15b60.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>TPS65131 split boost converter revision ✅🔧</p><p>We designed this split +12/-12 power supply board based on the TPS65131 (<a href="https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464">https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464</a>) a few months ago, but it languished while we worked on some other projects. We had an issue where the negative power rail was unstable. Thankfully, we found a thread that suggested slowing down the VNEG feedback loop (<a href="https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/628380/tps65131-q1-abnormal-operation-of-tps65131-q1-s-vneg">https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/628380/tps65131-q1-abnormal-operation-of-tps65131-q1-s-vneg</a>) with a 51k resistor. We hand-soldered that in, and it worked nicely. Then, the other fix was to flip around the trimmers so the turn direction matched the expected behavior. This should be good to book a second prototype, and then it can go into the shop.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/tps65131">tps65131</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/powersupply">powersupply</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronicsengineering">electronicsengineering</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/pcbdesign">pcbdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/circuitdesign">circuitdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronicsproject">electronicsproject</a> <a class="meta-item tag-link p-category" 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https://64.media.tumblr.com/1ef87174a0a8838015cf8a3743b19d37/64710ae068154da7-bb/s500x750/2e124510218eeefc0ccae709834b172a99f012a2.jpg 500w, https://64.media.tumblr.com/1ef87174a0a8838015cf8a3743b19d37/64710ae068154da7-bb/s540x810/dc705a90fcd12c751e3af1d54e2bd1dbc484b1e7.jpg 540w, https://64.media.tumblr.com/1ef87174a0a8838015cf8a3743b19d37/64710ae068154da7-bb/s640x960/ea6f5d2adaa76190ce8e4d8062b9d15284e3a2bd.jpg 640w, https://64.media.tumblr.com/1ef87174a0a8838015cf8a3743b19d37/64710ae068154da7-bb/s1280x1920/feb62220fd9b60de087f1885ccdb8483080096b0.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>TLV320DAC3100 take 2 🎧🔊</p><p>After much wrasslin’ with the TLV320DAC3100, we finally have a library that properly configures the PLL and sets up both the headphone and speaker output well enough. However, we made a mistake with the headphone wiring, accidentally swapping ground and mic, and we’re experiencing some noise in the headphones when the Class D speaker output is active.</p><p>We’re rerouting the board to separate the speaker outputs from the TRRS jack to address this. While at it, we’re also exposing the MICDET and bias pins—interestingly, the mic detects can double as a potentiometer input for volume control. The board grew by 50 mils, but we believe this version is the one. After testing, it should be ready for sale.</p><p>We’re excited to get this board dialed in since we plan to use this chip in several designs!</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/tlv320dac3100">tlv320dac3100</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/audioproject">audioproject</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/pcbdesign">pcbdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/hardwareengineering">hardwareengineering</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/embeddedaudio">embeddedaudio</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/dsp">dsp</a> <a class="meta-item tag-link p-category" 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href="https://adafruit.tumblr.com/post/776374613239365632/tlv320dac3100-take-2-after-much-wrasslin-with#notes" class="meta-item post-notes">17 notes</a> </span> <a href="https://adafruit.tumblr.com/post/776374613239365632/tlv320dac3100-take-2-after-much-wrasslin-with" title="1 month ago" class="meta-item post-date">Feb 24th, 2025</a><time class="dt-published" datetime="2025-02-24 09:48:48"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_776374613239365632"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="776374613239365632">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F776374613239365632%2Ftlv320dac3100-take-2-after-much-wrasslin-with&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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data-npf='{"type":"video","provider":"tumblr","url":"https://va.media.tumblr.com/tumblr_sqrckuwaK31was4p5.mp4","media":{"url":"https://va.media.tumblr.com/tumblr_sqrckuwaK31was4p5.mp4","type":"video/mp4","width":1280,"height":720},"poster":[{"url":"https://64.media.tumblr.com/tumblr_sqrckuwaK31was4p5_frame1.jpg","type":"image/jpeg","width":1280,"height":720}],"filmstrip":{"url":"https://64.media.tumblr.com/previews/tumblr_sqrckuwaK31was4p5_filmstrip.jpg","type":"image/jpeg","width":2000,"height":112}}'><video controls="controls" autoplay="autoplay" playsinline="playsinline" muted="muted" poster="https://64.media.tumblr.com/tumblr_sqrckuwaK31was4p5_frame1.jpg"><source src="https://va.media.tumblr.com/tumblr_sqrckuwaK31was4p5.mp4" type="video/mp4"></source></video></figure><p>Espressif programmer test success! 💻✨🔧</p><p>While developing boards, there are oftentimes we want to program ESP chips without going through the onboard USB port; this adapter will help us (and others) do that! It has a CP2102N USB-serial chip </p><p><a href="https://www.digikey.com/short/bm7n3p5z">https://www.digikey.com/short/bm7n3p5z</a></p><p>…with RX/TX signal LEDs and two transistors wired up to the DTR/RTS line for the ‘esptool standard’ reset procedure technique. The output IO, plus a 3.3V 500mA regulated output, is available on a socket header, so you can plug wires in for quick programming and debugging. You can use this for everything from an ESP8266 up to the ESP32-P4! Here, we are testing it with a HUZZAH ESP8266 breakout board </p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.adafruit.com/product/2471"><div class="poster" style="background-image:url(https://64.media.tumblr.com/e8e6d284ebf487a675e1d09542db3efd/7b8b63eaedcea765-a3/s500x750/071ca361aea44b88f46a14a86aba541e5e61e5d6.jpg)"><div class="title">Adafruit HUZZAH ESP8266 Breakout</div></div><div class="bottom"><div class="description"> Add Internet to your next project with an adorable, bite-sized WiFi microcontroller, at a price you like! The ESP8266 processor from Espress </div><div class="site-name"> adafruit.com </div></div></a></div><p>…one of our first Espressif chipset products.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/espressif">espressif</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/esp8266">esp8266</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/esp32">esp32</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/programmingtools">programmingtools</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/embeddeddevelopment">embeddeddevelopment</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/usbserial">usbserial</a> <a class="meta-item tag-link p-category" 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data-npf="{"type":"video","provider":"tumblr","url":"https://va.media.tumblr.com/tumblr_snh7r2YwJy1was4p5_720.mp4","media":{"url":"https://va.media.tumblr.com/tumblr_snh7r2YwJy1was4p5_720.mp4","type":"video/mp4","width":1920,"height":1080},"poster":[{"url":"https://64.media.tumblr.com/tumblr_snh7r2YwJy1was4p5_frame1.jpg","type":"image/jpeg","width":1920,"height":1080}],"filmstrip":{"url":"https://64.media.tumblr.com/previews/tumblr_snh7r2YwJy1was4p5_filmstrip.jpg","type":"image/jpeg","width":2000,"height":112}}"><video controls="controls" autoplay="autoplay" playsinline="playsinline" muted="muted" poster="https://64.media.tumblr.com/tumblr_snh7r2YwJy1was4p5_frame1.jpg"><source src="https://va.media.tumblr.com/tumblr_snh7r2YwJy1was4p5_720.mp4" type="video/mp4" /></video></figure><p>A4988 breakout prototype testing ⚙️🔧</p><p>We got our Allegro A4988 stepper driver breakout PCBs back and are ready to test them. First, we verified that STEP and DIR worked (yes!) and that the LEDs lit (yes, but we need to tweak the resistors to make the brightness even). Then we tried all of the stepper-settings, you can select 1, 4, 8, or 16-microsteps. All the sleep/reset/enable pins work. Finally, we checked the current limiting functionality with a potentiometer that can be twisted to select up to 2A current per coil. This directly affects the torque, so it’s easy to test by verifying that we can stall the motor with hands or vise-grips. We’ll order these with 2oz copper and get them into production next!</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/a4988">a4988</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/stepperdriver">stepperdriver</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/pcb">pcb</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/prototype">prototype</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/testing">testing</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/breakoutboard">breakoutboard</a> <a class="meta-item tag-link p-category" 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https://64.media.tumblr.com/ab09cff970e0eeab8d990af5fdb6301b/b0e331bbec73d134-51/s500x750/695b3627c7867a49325b72fa4a0c33e27791bb9e.jpg 500w, https://64.media.tumblr.com/ab09cff970e0eeab8d990af5fdb6301b/b0e331bbec73d134-51/s540x810/15033cf8758383301d74e90741e46134983daa1d.jpg 540w, https://64.media.tumblr.com/ab09cff970e0eeab8d990af5fdb6301b/b0e331bbec73d134-51/s640x960/132564be13f495bca44c96cff053c20bafd97a30.jpg 640w, https://64.media.tumblr.com/ab09cff970e0eeab8d990af5fdb6301b/b0e331bbec73d134-51/s1280x1920/7e6c880b7f06c4b694cfb179b8a5c98c1efc736c.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>Trinamical stepper breakout with TMC2209</p><p>About two weeks ago, we designed a breakout for the A4988</p><p><a href="https://blog.adafruit.com/2024/11/11/the-a4988-is-a-classic-stepper-driver-in-a-new-fit/">https://blog.adafruit.com/2024/11/11/the-a4988-is-a-classic-stepper-driver-in-a-new-fit/</a></p><p>and we’re still waiting for those prototype PCBs, but we’re not one to wait, because we think that the idea is a good one…so why not design another version? This time with the Trinamic TMC2209</p><p><a href="https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/TMC2209-LA-T/10232491">https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/TMC2209-LA-T/10232491</a></p><p>This is a similar “Step & Dir” type driver, with a wide motor range of 4.75 – 28 Volts and separate 3~5V IO pin. It has a couple nifty upgrades, though: like a diagnostic error output, index out so you know if you dropped a microstep, OTP config memory, and a half-duplex UART pin that you can use to configure and read stats from the chip. We kept the direction/step LEDs and the current-limit-set potentiometer, changed a few pins around, and voila! What do you think?</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/steppermotor">steppermotor</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/tmc2209">tmc2209</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronicsdesign">electronicsdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/makerproject">makerproject</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/pcbdesign">pcbdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/engineeringlife">engineeringlife</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/trinamic">trinamic</a> <a class="meta-item tag-link p-category" 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href="https://adafruit.tumblr.com/post/767801229041647616/trinamical-stepper-breakout-with-tmc2209-about-two" title="4 months ago" class="meta-item post-date">Nov 21st, 2024</a><time class="dt-published" datetime="2024-11-21 18:38:32"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_767801229041647616"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="767801229041647616">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F767801229041647616%2Ftrinamical-stepper-breakout-with-tmc2209-about-two&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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srcset="https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s75x75_c1/e3908331d7e8e6f96209e396083e09d8b4bc3346.jpg 75w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s100x200/41c7267a6a855b7e52fc4662394f2dc3a72f8c6a.jpg 100w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s250x400/872f4342890b5af8bb1f86ff62f7c863a0765550.jpg 250w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s400x600/74a6699668c447d041bf6df8097da1a6c69785b0.jpg 400w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s500x750/99e17ae4fc873e3a3135158f2ede3742419930ee.jpg 500w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s540x810/2ea6146e11721f76d9bac5564e68bbd1abba56a8.jpg 540w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s640x960/94aac3e8f92ec2bd529dad613b8fa5cbdecf2428.jpg 640w, https://64.media.tumblr.com/fbe2ac0d4f4f4f70999a37778cb0331a/3b1b72f8009a057a-3b/s1280x1920/7f3b022d69fe8fd0ad5319b85544713f9a627e6f.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>The A4988 is a classic stepper driver in a new fit ⚙️🔧</p><p>The Allegro A4988</p><p><a href="https://www.digikey.com/short/zvb1f825">https://www.digikey.com/short/zvb1f825</a></p><p>is one of many popular stepper driver chips with a STEP/DIR interface. Pololu popularized the tiny breakouts</p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.pololu.com/product/1182"><div class="poster" style="background-image:url(https://64.media.tumblr.com/79665bd2e90ed0e6c73bb5d2c38b6fe6/3b1b72f8009a057a-44/s1280x1920/042eb7aa590b18c0756e6862a3b341752b93f6f6.jpg)"><div class="title">Pololu - A4988 Stepper Motor Driver Carrier</div></div><div class="bottom"><div class="description"> This breakout board for Allegro’s A4988 microstepping bipolar stepper motor driver features adjustable current limiting, over-current and ov </div><div class="site-name"> pololu.com </div></div></a></div><p>used for like every CNC and 3D printer. We wanted to make a slightly more expansive design. We have mounting holes, terminal blocks for power and stepper wires, and three LEDs that will indicate the direction and when a step is activated. What other stepper chips should we make breakouts for?</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/stepperdriver">stepperdriver</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/3dprinting">3dprinting</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/cnc">cnc</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/makerspace">makerspace</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/diyprojects">diyprojects</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/allegro">allegro</a> <a class="meta-item tag-link p-category" 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https://64.media.tumblr.com/302b4d043d1c5fbe3d929c419380d9f3/7d8f311e6ae275df-9c/s500x750/e5d11ed3c281e095fef6c58577f507efebcb65fa.jpg 500w, https://64.media.tumblr.com/302b4d043d1c5fbe3d929c419380d9f3/7d8f311e6ae275df-9c/s540x810/4825c84bc3df0c284a99a987b44074885e6f0c32.jpg 540w, https://64.media.tumblr.com/302b4d043d1c5fbe3d929c419380d9f3/7d8f311e6ae275df-9c/s640x960/6c70255a3d75cc013f76a43ce05faf4498dc8f52.jpg 640w, https://64.media.tumblr.com/302b4d043d1c5fbe3d929c419380d9f3/7d8f311e6ae275df-9c/s1280x1920/ef6c152ebfd6d248beb28a12fcc33e6624ba1daa.jpg 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>TPS65131 Split-Output Booster Supply</p><p>Generating a negative voltage over -5V is kinda annoying: most chargepumps max out at 5V inversion, and ones that can double-then-invert like the MAX232 aren’t high current. We bumped into the TPS65131</p><p><a href="https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464">https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464</a></p><p>while working on our Floppsy design</p><div class="npf-link-block has-poster"><a target="_blank" href="https://blog.adafruit.com/2024/10/29/floppsy-rev-b-now-apple-ier-a-floppy-disk-shaped-board-fully-open-hardware-open-source-interface-to-archive-diskettes/"><div class="poster" style="background-image:url(https://64.media.tumblr.com/c81771e1f72c64c3d20f82a5473b20ec/7d8f311e6ae275df-63/s1280x1920/2217aa6754e54d2d2ed4e2088071478a6678f626.jpg)"><div class="title">Floppsy rev B – now Apple-ier – a floppy disk-shaped board, fully open hardware / open source interface to archive diskettes!</div></div><div class="bottom"><div class="description"> With the big new Adafruit factory, and Ladyada & pt’s move to Brooklyn also complete, it’s time to turn our attention to some older projects </div><div class="site-name"> Adafruit Industries - Makers, hackers, artists, designers and engineers! </div></div></a></div><p>- we need -12V to bias the Apple Disk ][ drive control system. It’s a combo buck and boost: give it 3~5VDC and give you up to -15V and +15V output. The split supply part is particularly nice because you’ll want +-12V or +-15V for analog projects. This standalone power supply breakout has two mini trim pots to help adjust the output voltages on both sides so you can have as little as +/-6V and up to +/-15V. With the 2A internal switches, you’ll get a fair amount of current on either rail.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronicsdesign">electronicsdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/voltageconversion">voltageconversion</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/tps65131">tps65131</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/powersupplydesign">powersupplydesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/analogprojects">analogprojects</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/diyelectronics">diyelectronics</a> <a class="meta-item tag-link p-category" 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https://64.media.tumblr.com/59475e49f613e6956a6a637a3fffb8eb/d52c7d5f35ad966f-18/s500x750/382790e734eee7767670b3750e67bc76cd14bd17.png 500w, https://64.media.tumblr.com/59475e49f613e6956a6a637a3fffb8eb/d52c7d5f35ad966f-18/s540x810/cb0b7b7307d3828dab81a1bb2ff0be75b11b1405.png 540w, https://64.media.tumblr.com/59475e49f613e6956a6a637a3fffb8eb/d52c7d5f35ad966f-18/s640x960/f1bfbf40e25b9a2acf3d8ab504cd2dcba76903f6.png 640w, https://64.media.tumblr.com/59475e49f613e6956a6a637a3fffb8eb/d52c7d5f35ad966f-18/s1280x1920/7f8dccc9c862e73ef06a666899f8ea28c3041c0d.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>CP2105 dual UART breakout 🔌💻</p><p>Sometimes, you need more than one UART for interfacing with hardware. So instead of getting two CP2102 breakouts </p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.adafruit.com/product/5335"><div class="poster" style="background-image:url(https://64.media.tumblr.com/eeaffd875ee42d9bcf84a43daafe0978/d52c7d5f35ad966f-ea/s500x750/823b159e70213eb7e67a0fc1a6c77e8515a78820.jpg)"><div class="title">Adafruit CP2102N Friend - USB to Serial Converter</div></div><div class="bottom"><div class="description"> Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer y </div><div class="site-name"> adafruit.com </div></div></a></div><p>you could use this CP2105</p><div class="npf-link-block has-poster"><a target="_blank" href="https://www.digikey.com/en/products/detail/silicon-labs/CP2105-F01-GMR/4069046"><div class="poster" style="background-image:url(https://64.media.tumblr.com/54f8af8ade9055780fedef9087dc075f/d52c7d5f35ad966f-0e/s640x960/c659f0cd8933745dea60e81d26d180baae9e8731.jpg)"><div class="title">CP2105-F01-GMR | DigiKey Electronics</div></div><div class="bottom"><div class="description"> Order today, ships today. CP2105-F01-GMR – USB Bridge, USB to UART USB 2.0 UART Interface 24-QFN (4x4) from Silicon Labs. Pricing and Availa </div><div class="site-name"> DigiKey Electronics </div></div></a></div><p>chip. We exposed the two CDC UARTs on either side plus the modem control signals so you could use this for bootloading various microcontrollers. Coming soon!</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/siliconlabs">siliconlabs</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/digikey">digikey</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/uart">uart</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/cp2105">cp2105</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/dualuart">dualuart</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/breakoutboard">breakoutboard</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/microcontroller">microcontroller</a> <a 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data-big-photo="https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s1280x1920/be656b6c67fae14b4383d047aa4f37244c9ca0a4.png" data-big-photo-height="1080" data-big-photo-width="1080"><img class="post_media_photo image" src="https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s1280x1920/be656b6c67fae14b4383d047aa4f37244c9ca0a4.png" srcset="https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s75x75_c1/cbd11344d85052f277b9bafb74bf504d422827d2.png 75w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s100x200/1629c9044b312ab981cde75a067ea123e7d61557.png 100w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s250x400/c3639a7e637c2bcab340361a47b3ca5ddd9e709d.png 250w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s400x600/8eda50b5287208262bab4d13775b2a131b02ae92.png 400w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s500x750/b7f0fa6ca5e81abb7527143fc7139336945b52bf.png 500w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s540x810/c16969ee5cfd7692975ef7e163b174e920c4093b.png 540w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s640x960/c6601fa64072dcd9a76ad36ad9c7a7bcb112eb2c.png 640w, https://64.media.tumblr.com/67228e3d4a9ae03a1fb093774b34cd7c/8945b502e374dc52-f6/s1280x1920/be656b6c67fae14b4383d047aa4f37244c9ca0a4.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>BQ25185 is a Li-Poly charger with all the fixin’s 🔋⚡️🔌</p><p>We covered the BQ25185 (<a href="https://www.digikey.com/short/z1f5vhzv">https://www.digikey.com/short/z1f5vhzv</a>) on a recent Desk of Ladyada; it’s a nice upgrade to the MCP73831 (<a href="https://www.digikey.com/short/vpvwfn05">https://www.digikey.com/short/vpvwfn05</a>) or MCP73833 (<a href="https://www.digikey.com/short/32hzp4zp">https://www.digikey.com/short/32hzp4zp</a>): it has high input voltage support, up to 18VDC, multi-chemistry charging such as for LiFePO4 not just Li-Poly/Li-Ion, power path for separated load supply with 4.5V regulated max out, two status pins, up to 1A output, and solar panel support by tracking the input voltage. It’s not much more expensive and saves a lot of extra components. here’s a breakout to let us start trying out this chip.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/battery">battery</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/lipoly">lipoly</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/liion">liion</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/BQ25185">BQ25185</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/charging">charging</a> <a class="meta-item tag-link 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16:38:21"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_762444672188678144"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="762444672188678144">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F762444672188678144%2Fbq25185-is-a-li-poly-charger-with-all-the-fixins&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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https://64.media.tumblr.com/92ae85814fdb0dda70413aef1792d059/ad6f5e16f37c0157-a1/s500x750/a8defefafefefcd464621e6319ceea5a1d7cefc7.png 500w, https://64.media.tumblr.com/92ae85814fdb0dda70413aef1792d059/ad6f5e16f37c0157-a1/s540x810/f1452d5d4d40123d72a6f4cb52be58077a733f3d.png 540w, https://64.media.tumblr.com/92ae85814fdb0dda70413aef1792d059/ad6f5e16f37c0157-a1/s640x960/b2df61387b57a78e4af611da82152d59688e5920.png 640w, https://64.media.tumblr.com/92ae85814fdb0dda70413aef1792d059/ad6f5e16f37c0157-a1/s1280x1920/1cbd252f29a1718e23d098a4691ef77c0f3f7142.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>DS4420 I2C audio volume controller, try 2 🎵🔊🔧</p><p>We started this breakout for the DS4420 (<a href="https://blog.adafruit.com/2021/01/15/ds2240-qt-breakout-routing-timelapse/">https://blog.adafruit.com/2021/01/15/ds2240-qt-breakout-routing-timelapse/</a>) I2C-controllable audio volume chip. We got it working but noticed late that it’s a 5V-power-only chip and shouldn’t be run from 3.3V. Then the parts shortage hit hard, and we couldn’t get more samples, so it went on hiatus! But now we’re about to get tons of DS4420 chips (<a href="https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS4420N/1769257">https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS4420N/1769257</a>) - so we’re respinning it. This time with an AP3602 switched-capacitor booster (<a href="https://www.digikey.com/en/products/detail/adafruit-industries-llc/3661/7915572">https://www.digikey.com/en/products/detail/adafruit-industries-llc/3661/7915572</a>) to give a nice 5V power rail. Coming soon.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/DS4420">DS4420</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/audio">audio</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/i2c">i2c</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/diyprojects">diyprojects</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/audiocontroller">audiocontroller</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/hardwaredesign">hardwaredesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/engineering">engineering</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/circuitdesign">circuitdesign</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/techinnovation">techinnovation</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/makerspace">makerspace</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/newrelease">newrelease</a> </section> </section> <section class="panel"> <footer class="post-footer"> <section class="panel"> <section class="inline-meta date-notes"> <div class="date-note-wrapper"> <span> <a href="https://adafruit.tumblr.com/post/760371445018836992/ds4420-i2c-audio-volume-controller-try-2-we#notes" class="meta-item post-notes">6 notes</a> </span> <a href="https://adafruit.tumblr.com/post/760371445018836992/ds4420-i2c-audio-volume-controller-try-2-we" title="7 months ago" class="meta-item post-date">Aug 31st, 2024</a><time class="dt-published" datetime="2024-08-31 19:25:18"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_760371445018836992"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="760371445018836992">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F760371445018836992%2Fds4420-i2c-audio-volume-controller-try-2-we&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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https://64.media.tumblr.com/ca9f73fd1a5fa01271fb3825c908fccf/4c5107238ffd2162-3f/s500x750/b73a13cf80f40c434498eb5531e2284d3c065c56.png 500w, https://64.media.tumblr.com/ca9f73fd1a5fa01271fb3825c908fccf/4c5107238ffd2162-3f/s540x810/d97f87a2fa1cc96c63e12073ea08b0a50323d202.png 540w, https://64.media.tumblr.com/ca9f73fd1a5fa01271fb3825c908fccf/4c5107238ffd2162-3f/s640x960/41b095952520a97e01ea05c9f6f26ab47f2096cd.png 640w, https://64.media.tumblr.com/ca9f73fd1a5fa01271fb3825c908fccf/4c5107238ffd2162-3f/s1280x1920/a8707cae8e066651ae6b205f111a181f8ce6275c.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>AS7343 - new proto for 14-channel spectral sensor 🌈🔬🔧</p><p>The AS7343 (<a href="https://ams-osram.com/products/sensors/ambient-light-color-spectral-proximity-sensors/ams-as7343-spectral-sensor">https://ams-osram.com/products/sensors/ambient-light-color-spectral-proximity-sensors/ams-as7343-spectral-sensor</a>) is a lot like the AS7341 (<a href="https://www.adafruit.com/product/4698">https://www.adafruit.com/product/4698</a>), but instead of 10 channels, there are 14! 12 are for light wavelengths, 1 is for ‘clear’ (human visible), and 1 is for flicker detection. Thankfully, the '43 has the same footprint and pinout as the '41, so this was an easy prototype PCB to spin; we just changed the silkscreen. Coming soon.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/AS7343">AS7343</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/14channel">14channel</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/sensor">sensor</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/spectral">spectral</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/prototype">prototype</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/technology">technology</a> <a class="meta-item 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date-notes"> <div class="date-note-wrapper"> <span> <a href="https://adafruit.tumblr.com/post/759796188665036800/as7343-new-proto-for-14-channel-spectral-sensor#notes" class="meta-item post-notes">9 notes</a> </span> <a href="https://adafruit.tumblr.com/post/759796188665036800/as7343-new-proto-for-14-channel-spectral-sensor" title="7 months ago" class="meta-item post-date">Aug 25th, 2024</a><time class="dt-published" datetime="2024-08-25 11:01:50"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_759796188665036800"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="759796188665036800">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F759796188665036800%2Fas7343-new-proto-for-14-channel-spectral-sensor&t=" 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data-big-photo="https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s1280x1920/e19daa4972d8c10687bd5946d5e2451bf3e676b3.png" data-big-photo-height="1080" data-big-photo-width="1080"><img class="post_media_photo image" src="https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s1280x1920/e19daa4972d8c10687bd5946d5e2451bf3e676b3.png" srcset="https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s75x75_c1/5985f5bb580ccc7f233374299189514702792d64.png 75w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s100x200/1d16f03bbbf61d8dd8a363b84c258cc423b21161.png 100w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s250x400/a92389a61886ed8666e0cf0718b9baa5a80c517f.png 250w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s400x600/f9bde8ffe493dc45dd9b81669907b94c815b673d.png 400w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s500x750/d778dfa7b6e63bc6ce32e9837578838d7815234e.png 500w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s540x810/35b491d75cb505230afba8e18ba57422e009548b.png 540w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s640x960/87fd96c5b52fb7a2be014aa518bbf36f830d1bba.png 640w, https://64.media.tumblr.com/fcde3bdc8cdaec23f80f79497884d458/89b58d4a9f984bf3-c0/s1280x1920/e19daa4972d8c10687bd5946d5e2451bf3e676b3.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>DS2482-800 is an I2C to 8x one wire port converter 🔧🌡️🔗</p><p>We like our breakout for the DS2484 (<a href="https://www.adafruit.com/product/5976">https://www.adafruit.com/product/5976</a>), an I2C to one-wire converter - and got a heads up that there’s also an 8-port version called the DS2482-800 (<a href="https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS2482S-800/1197437">https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS2482S-800/1197437</a>). at first this seems a bit odd: the whole point of one-wire is that you can share that wire with all sensors. But you don’t want to have to deal with the DS18b20 sensor addressing to determine what zone it’s in that would require hard-coding the unique identifiers. This way, you can have up to 8 temperature sensors that can be hot-swapped.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/DS2482">DS2482</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/I2C">I2C</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/electronics">electronics</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/sensors">sensors</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/onewire">onewire</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/temperaturemonitoring">temperaturemonitoring</a> <a class="meta-item tag-link p-category" 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href="https://adafruit.tumblr.com/post/759339794753077248/ds2482-800-is-an-i2c-to-8x-one-wire-port-converter" title="7 months ago" class="meta-item post-date">Aug 20th, 2024</a><time class="dt-published" datetime="2024-08-20 10:07:39"></time> </div> </section> <section class="post-controls"> <div class="controls-wrapper"> <div class="control share-control"> <nav class="pop"> <a href="#" class="share selector"></a> <div class="pop-menu share-menu south" id="share_759339794753077248"> <ul> <li class="open-in-app"><a href="#" class="share-item open-in-app" data-post="759339794753077248">Open in app</a></li> <li><a href="https://facebook.com/sharer.php?u=https%3A%2F%2Fadafruit.tumblr.com%2Fpost%2F759339794753077248%2Fds2482-800-is-an-i2c-to-8x-one-wire-port-converter&t=" class="share-item facebook" target="_blank">Facebook</a></li> <li><a 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https://64.media.tumblr.com/6ab8a7068c2b16d3a01a91ff7b11c525/e72118307403caba-04/s500x750/a139ea3987b55674987fd11ebefc70bdd6614662.png 500w, https://64.media.tumblr.com/6ab8a7068c2b16d3a01a91ff7b11c525/e72118307403caba-04/s540x810/58a5ecabaa7d84c12511bbd228703dc60cacfd70.png 540w, https://64.media.tumblr.com/6ab8a7068c2b16d3a01a91ff7b11c525/e72118307403caba-04/s640x960/7dff2854d332164699f79af9a60a8a2a7193efae.png 640w, https://64.media.tumblr.com/6ab8a7068c2b16d3a01a91ff7b11c525/e72118307403caba-04/s1280x1920/98d021ab4b3e163192ba50cb29b88599bdb02cf6.png 1080w" sizes="(max-width: 1080px) 100vw, 1080px" alt="image"></a></figure></div></div><p>DAC7578 is a 12-bit octal output DAC 🔊📊🔗</p><p>Folks love our various digital-to-analog converter boards (<a href="https://www.adafruit.com/search?q=dac">https://www.adafruit.com/search?q=dac</a>). We’ve got a few single channels and a quad (<a href="https://www.adafruit.com/product/4470">https://www.adafruit.com/product/4470</a>) - but what about an octal DAC? The DAC7578 (<a href="https://www.digikey.com/en/products/base-product/texas-instruments/296/DAC7578/80464">https://www.digikey.com/en/products/base-product/texas-instruments/296/DAC7578/80464</a>) is I2C controlled, so it is easy to integrate anywhere, and 8 outputs that can be 0-5VDC. we spun up a quick breakout board so we could try it out.</p></div> </div> <section class="inline-meta post-extra"> </section> <section class="inline-meta post-extra has-tags"> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/adafruit">adafruit</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/DAC7578">DAC7578</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/octal">octal</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/digitalanalog">digitalanalog</a> <a class="meta-item tag-link p-category" href="https://adafruit.tumblr.com/tagged/octaldac">octaldac</a> <a 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