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#electricalengineering

4 posts4 participants1 post today
Dave Rahardja<p>Oh man, this is SO GOOD. Mehdi Sadaghdar (ElectroBOOM) walks you through making a multitouch-capable capacitive sensor FROM SCRATCH. Along the way, he also explains how resistive and IR-beam touch sensors work.</p><p>If you’ve ever wondered how the touch screens on your phones and tablets work, you need to view this video. So good.</p><p>I also enjoy his jabs at <a href="https://sfba.social/tags/AI" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AI</span></a> along the way.</p><p><a href="https://sfba.social/tags/maker" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maker</span></a> <a href="https://sfba.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://sfba.social/tags/electricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalEngineering</span></a> </p><p><a href="https://www.youtube.com/watch?v=u8s9hpjN25Y" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=u8s9hpjN25</span><span class="invisible">Y</span></a></p>
Anna-Lena Marx<p>Did you know I studied electrical engineering besides work? On Thursday, I finished my bachelor's thesis with the final presentation and it's time to finally present my project: ZEReader, a microcontroller-based E-Reader.<br>Inspired by the Open Book Project by Joey Castillo, I designed my own platform from scratch. My focus was on building a reader usable in everyday life that is capable of handling books in the EPUB format. The project is still in a very early phase, but it shows great potential, and I have lots of ideas for future revisions.</p><p>You can follow the project's journey and see its current state at <a href="https://marx.engineer/zereader/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">marx.engineer/zereader/</span><span class="invisible"></span></a> and the linked GitHub repos!</p><p>And of course, a special thank you to <span class="h-card" translate="no"><a href="https://aisler.social/@aislerhq" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>aislerhq</span></a></span> for producing and sponsoring the PCBs!</p><p><a href="https://social.linux.pizza/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>opensource</span></a> <a href="https://social.linux.pizza/tags/hardware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hardware</span></a> <a href="https://social.linux.pizza/tags/ereader" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ereader</span></a> <a href="https://social.linux.pizza/tags/zephyr" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>zephyr</span></a> <a href="https://social.linux.pizza/tags/kicad" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>kicad</span></a> <a href="https://social.linux.pizza/tags/makers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>makers</span></a> <a href="https://social.linux.pizza/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> <a href="https://social.linux.pizza/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a></p>
Bob the Traveler<p>Elisha Gray, born OTD in 1835, co-founded the Western Electric Manufacturing Company <a href="https://cromwell-intl.com/radio/copper-wire/?s=mb" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">cromwell-intl.com/radio/copper</span><span class="invisible">-wire/?s=mb</span></a> <a href="https://mastodon.world/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://mastodon.world/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>history</span></a></p>
Queen Calyo Delphi<p>Hey! I got an <a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> question for the fedi mind hive!</p><p>What do you believe is the more long-term accurate clock source: Quartz or mains AC?</p><p>Why do you believe this?</p><p>I want to decide on a primary clock signal source for Horologium Keplerus, but I can't decide between quartz or mains AC.</p>
NaClKnight. Who? NaClKnight!<p>Im a Mechanical Engineer, not Electrical, but these are still hella cool</p><p>PCB reference books with pages made from actual USB-C powered PCBs </p><p><a href="https://www.tomshardware.com/tech-industry/pcb-reference-books-with-pages-made-from-actual-usb-c-powered-pcbs-are-now-available-at-usd37-each" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tomshardware.com/tech-industry</span><span class="invisible">/pcb-reference-books-with-pages-made-from-actual-usb-c-powered-pcbs-are-now-available-at-usd37-each</span></a></p><p><a href="https://c.im/tags/Engineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Engineering</span></a> <a href="https://c.im/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://c.im/tags/PCB" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PCB</span></a> <a href="https://c.im/tags/Electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Electronics</span></a> <a href="https://c.im/tags/Book" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Book</span></a></p>
Queen Calyo Delphi<p>Hm.</p><p>Another perennial debate as an <a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> hobbyist:</p><p>Do I buy only as many units as I need for this one project I'm working on now?</p><p>Or do I buy enough to get the next price breakpoint and have spares for future projects I have not yet planned?</p><p>🤔 </p><p>(I need at least three of these, preferably five to feel comfortable futzing around with 'em, but buying ten would cost only $8.50 more than that: <a href="https://www.digikey.com/en/products/detail/texas-instruments/CD4059AM/1691226" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">digikey.com/en/products/detail</span><span class="invisible">/texas-instruments/CD4059AM/1691226</span></a> )</p>
Queen Calyo Delphi<p>An alternative approach that I can think of is discrete implementation of CMOS buffer/inverter using power MOSFETs which might be easier for me to search for good P/Ns.</p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Queen Calyo Delphi<p>Alrighty, I need to post an RFC to the <a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> fedi mind hive:</p><p>I am searching for a method to inject a clock signal (f≤1Hz) into a power supply by swapping the +V/0V rails back and forth.</p><p>Requirements:<br>- Able to operate at up to +12V<br>- Single-rail supply<br>- Min. TDP: 1W</p><p>My current idea is to "creatively" use audio power amp ICs for this purpose, but I don't know what bang-for-buck P/N's to hunt for.</p><p>Hit me with your suggestions and/or preferred solutions!</p>
Queen Calyo Delphi<p>At least I now know that what I'm designing is a bunch of giant, wall-mounted, concentric ✨ ring counters ✨ to be implemented using discrete components.</p><p>That's knowledge I can carry forward to more effectively find solutions, and I may have actually already found one I can already use, but alas it must wait until the work day ends.</p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Queen Calyo Delphi<p>Update!</p><p><span class="h-card" translate="no"><a href="https://tech.lgbt/@MeiLin" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>MeiLin</span></a></span> gave me the search engine shibboleth I needed to find this web page with a lovely and clever transistor circuit that I can try out!</p><p>It's even simple enough for me to try to breadboard it!</p><p><a href="https://www.dos4ever.com/ring/ring.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">dos4ever.com/ring/ring.html</span><span class="invisible"></span></a></p><p>Edit:<br>... Oh wait this emulated schockley diode circuit requires obscene voltages in order to exceed the avalanche breakdown Vec. I uh... can't use that. I'll need to find other solutions. :x</p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Academic Europe<p>Job - Alert 💡</p><p>Wissenschaftliche*r Mitarbeiter*in (m/w/d) – Realisierung photonischer Module </p><p>Deadline: 2025-08-01<br>Location: Germany, Berlin &nbsp;</p><p><a href="https://www.academiceurope.com/ads/wissenschaftlicher-mitarbeiterin-m-w-d-realisierung-photonischer-module/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">academiceurope.com/ads/wissens</span><span class="invisible">chaftlicher-mitarbeiterin-m-w-d-realisierung-photonischer-module/</span></a></p><p><a href="https://mstdn.business/tags/hiring" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hiring</span></a> <a href="https://mstdn.business/tags/Photonics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Photonics</span></a> <a href="https://mstdn.business/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>physics</span></a> <a href="https://mstdn.business/tags/optoelectronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>optoelectronics</span></a> <a href="https://mstdn.business/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> <a href="https://mstdn.business/tags/mechanicalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mechanicalengineering</span></a> <a href="https://mstdn.business/tags/physicalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>physicalengineering</span></a></p>
Queen Calyo Delphi<p>This circuit would be so much easier to implement if I would just let myself use J/K flip-flops, but:</p><p>1. the only cheap ones available are duals in 16-pin packages when I only need one per ring node and each ring node is an independent pcb, and</p><p>2. I very explicitly decided that the light at each node MUST be surrounded by a curious cloud of discrete components for the sake of art 😤</p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Queen Calyo Delphi<p>Oh gods, I'm gonna have to find resources to study up about resistor-transistor, diode-transistor, and transistor-transistor logic, if I want to be able to implement the round-robin circuit for the Horologium Keplerus using discrete transistors. &gt;.&gt;;;</p><p>I guess RFC for links to resources if anybody has useful links that can cut through the less than optimal search engine algorithms that almost only return SEO'd blogs that have no meaningful information?</p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Queen Calyo Delphi<p>I am *very* temptedly considering something extremely cursed:</p><p>Abusing an "ultra thin" ethernet cable to bring +12V+GND to a control box that needs only a few mA max, and 3x 5V differential signals back out to the thing being controlled.</p><p>"ultra thin" ethernet cables typically use 30AWG conductors which have a max power transmission ampacity of ~142mA, way more than enough to power the control box.</p><p>I'm pretty certain the insulation inside can handle 12V. 🤔 </p><p><a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
Captain_Faraday :fedora:<p>Hey everyone! I've made the jump from Mastodon.Social and wanted to introduce myself. I'm an electrical engineer living in the southeastern USA.</p><p>You'll find me tooting about Linux, FOSS, Python, and scripting. When I'm not on the keyboard, I'm into photography, hiking, and enjoying nature with my spouse.</p><p>Also, I have two black cats that pay rent with their winning personalities and love. lol :rickdance: </p><p>Looking forward to connecting in this community! Don't hesitate to say hello.</p><p><a href="https://social.linux.pizza/tags/Introduction" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Introduction</span></a> <a href="https://social.linux.pizza/tags/NewHere" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NewHere</span></a> <a href="https://social.linux.pizza/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://social.linux.pizza/tags/FOSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FOSS</span></a> <a href="https://social.linux.pizza/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a> <a href="https://social.linux.pizza/tags/Python" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Python</span></a> <a href="https://social.linux.pizza/tags/Photography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Photography</span></a> <a href="https://social.linux.pizza/tags/Hiking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hiking</span></a> <a href="https://social.linux.pizza/tags/Nature" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nature</span></a> <a href="https://social.linux.pizza/tags/Cats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cats</span></a></p>
Captain_Faraday<p>Hello Fediverse! 👋</p><p>I'm an electrical engineer living in the southeastern USA.</p><p>You'll find me tooting about Linux, FOSS, Python, and scripting. When I'm not on the keyboard, I'm into photography, hiking, and enjoying nature with my spouse. </p><p>Also, I have two black cats that pay rent with their winning personalities and love. lol</p><p>Looking forward to connecting! Don't hesitate to say hello.</p><p><a href="https://mastodon.social/tags/Introduction" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Introduction</span></a> <a href="https://mastodon.social/tags/NewHere" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NewHere</span></a> <a href="https://mastodon.social/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a> <a href="https://mastodon.social/tags/FOSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FOSS</span></a> <a href="https://mastodon.social/tags/Python" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Python</span></a> <a href="https://mastodon.social/tags/Photography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Photography</span></a> <a href="https://mastodon.social/tags/Hiking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hiking</span></a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nature</span></a> <a href="https://mastodon.social/tags/Cats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cats</span></a></p>
Bob the Traveler<p>French physicist Jules Antoine Lissajous, who died OTD in 1880, is the namesake of Lissajous figures as used with oscilloscopes <a href="https://cromwell-intl.com/radio/probes.html?s=mb" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">cromwell-intl.com/radio/probes</span><span class="invisible">.html?s=mb</span></a> <a href="https://mastodon.world/tags/hamradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hamradio</span></a> <a href="https://mastodon.world/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://mastodon.world/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>history</span></a></p>
Harvey Sandstrom<p>Well, be careful what you wish for I guess. I asked TI Webbench for an ultra efficient 3v3 buck converter and it recommended an inductor that is 13mm x 13mm and a FULL CENTIMETER TALL. Chonky doesn't even describe this thing, it's paperweight all by itself. They don't specify weight but its a cubic centimeter of copper and ferrite, so I'm guessing it's heavy AF.</p><p>😲 😳 😣 </p><p> <a href="https://www.digikey.com/en/products/detail/eaton-electronics-division/HC1-100-R/667440" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">digikey.com/en/products/detail</span><span class="invisible">/eaton-electronics-division/HC1-100-R/667440</span></a></p><p><a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
doboprobodyne<p><span class="h-card" translate="no"><a href="https://vmst.io/@jalefkowit" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>jalefkowit</span></a></span> </p><p>It's an interesting point you highlight because I've never thought of things through that paradigm. Now that I see it, I realise I'm hoping to transition to <a href="https://mathstodon.xyz/tags/openBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openBSD</span></a> because I believe of mainstream operating systems, it probably has the best <a href="https://mathstodon.xyz/tags/DX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DX</span></a>.</p><p>In this particular case, I believe that the developers exploit that in order to optimise for what might be called <a href="https://mathstodon.xyz/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>security</span></a> which impresses me.</p><p>I realise it's probably an outlier in this regard!</p><p><a href="https://mathstodon.xyz/tags/developerExperience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>developerExperience</span></a> <a href="https://mathstodon.xyz/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cybersecurity</span></a> <a href="https://mathstodon.xyz/tags/quality" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>quality</span></a> <a href="https://mathstodon.xyz/tags/systemArchitecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>systemArchitecture</span></a> <a href="https://mathstodon.xyz/tags/cybernetics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cybernetics</span></a> <a href="https://mathstodon.xyz/tags/complexSystemsTheory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>complexSystemsTheory</span></a> <a href="https://mathstodon.xyz/tags/qualityAssurance" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>qualityAssurance</span></a> <a href="https://mathstodon.xyz/tags/Deming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Deming</span></a> <a href="https://mathstodon.xyz/tags/Shuart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Shuart</span></a> <a href="https://mathstodon.xyz/tags/design" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>design</span></a> <a href="https://mathstodon.xyz/tags/software" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>software</span></a> <a href="https://mathstodon.xyz/tags/coding" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>coding</span></a> <a href="https://mathstodon.xyz/tags/softwareEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>softwareEngineering</span></a> <a href="https://mathstodon.xyz/tags/abstraction" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>abstraction</span></a> <a href="https://mathstodon.xyz/tags/electricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalEngineering</span></a> <a href="https://mathstodon.xyz/tags/HDL" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HDL</span></a> <a href="https://mathstodon.xyz/tags/VHDL" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VHDL</span></a> <a href="https://mathstodon.xyz/tags/theresNoSuchThingAsSoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>theresNoSuchThingAsSoftware</span></a></p>
rahix<p>Once again doing a control panel layout using <span class="h-card" translate="no"><a href="https://fosstodon.org/@FreeCAD" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>FreeCAD</span></a></span> today! Slowly building up a workflow for this — maybe I should create a custom workbench at some point?</p><p><a href="https://chaos.social/tags/FreeCAD" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FreeCAD</span></a> <a href="https://chaos.social/tags/FreeCADFriday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FreeCADFriday</span></a> <a href="https://chaos.social/tags/wiring" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wiring</span></a> <a href="https://chaos.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a></p>
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