Reddit:Electronics
AI generated electronic horrors
 | submitted by /u/ThomasTTEe2 [link] [comments] |
I built a Programmable Electronic Load & Battery Tester from scavenged parts
 | submitted by /u/Alternative-Way-3685 [link] [comments] |
Customizable 4-Letter 5x5 LED Matrices
 | This was designed and 'built' by me, by that I mean I designed the circuit, PCB layout, 3D model (and printed them myself) and only had JLCPCB fabricate the PCB as that is outside of my abilities. Edit: I forgot to mention that I also programmed this all, originally in Arduino C (in 2024) and then in 2025 I ported it over to micropython and made it more scalable. [link] [comments] |
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NOS AT&T MilSpec Transistor Collection Circa 1974-79
 | These came from an AT&T plant that worked on submarine data systems. All officially inspected. Just wanted to share for anyone else who nerds out on this stuff. [link] [comments] |
My first ever PCB
 | If any of you remember or came across it, a few weeks ago I posted about making my own radio into a pcb. I couldn’t have done it without your advice. The pcb had some hiccups but it works amazingly well. I used the antenna and speaker and I could hear it all so cleanly it was really exciting. (I may grab a video next time). About the hiccups… 1) On of the Ic pins was floating, in the design it was supposed to connect to the 9V plane but it didn’t as the plane there was an island (I thought DRC would get it and also I avoided islands because of this…). Small issue easy fix the pin was just deciding about the volume being a bar or 1 Led. 2)The banana connectors refused to connect well while screwed in and had to get soldered. 3) My fault again, while screwing in the 9v connection I accidentally scratched the gndplane at the bottom and when soldering they shorted…. (We love current limited power supplies that didn’t kill everything) 4) The pin footprint for output was 1.00mm and th pins I had were 1.27mm (like the footprint for input).. What I learned and my advice for anyone that wants to make their own: 1) TEST POINTS have some test hooks or pads in places you’d want to test (just get the breadboard and while making it write down which points you test alot) 2) Gerber viewer and be really careful about (kicad) small blue lines showing that something isn’t connecting. 3) Choose right footprints… 4)Good grounding. I could see on my oscilloscope that if I didn’t use the middle ground and just had the antenna one, the noise from on/off leds made audible clicks. That’s all thank you very much for your advice at the early stages! [link] [comments] |
I made an open source CAM tool for easy PCB fabrication. Hope you guys find it useful.
Hi everyone, I started making an isolation routing CAM tool for myself cause I disliked the alternatives and things snowballed a bit.
https://github.com/RicardoJCMarques/EasyTrace5000
It's 100% online, client-side, open-source and free to use. Although I am looking for sponsors to help with some development costs. Especially hardware partners so I can start working on a dedicated fiber/UV laser pipeline.
It uses Clipper2 WASM for boolean operations and then a custom algorithm reconstructs curves from the original geometry (it's not arc fitting). Meaning the output g-code can have G2/G3 commands. (Mostly G2 because of cut direction but that's another story.)
Post-processors need more testing but grbl should be safe and usable. Use it with a bit of caution. The others try them with extra caution, especially Roland RML. I've tested as much as I can although I only have a cheap grbl machine. Soon I may go somewhere that has a Roland cnc.
Work-flow is simple, add files and select them on the left nav-tree to expose parameters then it should be straight forward. Origin/rotation and machine stuff are exposed on tool loading but collapse to the top right.
Documentation is an AI placeholder although it should do the trick for a while. I'll write something from scratch soonish.
Let me know what you guys think. I'd love to get as much feedback as possible at this point. Both what's good and what's bad and what's uterly broken so I can focus where I should. The issue tracker on the repo is also available.
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