Hardware & Embedded
Technology · 56 members
Firmware, solder, oscilloscopes.
About this space
Microcontrollers, PCB revisions, firmware, and the bug that turns out to be a floating pin. Schematics, scope traces, enclosure problems, and the revision that finally stopped the brownouts. Post the failure as readily as the finished board — the failures are where the teaching is.
Topics
- Firmware
- PCB design
- Debugging
- Show your work
Recent discussions
- A satellite pass predictor on an ESP32 for our astronomy club, and the double-precision trapShow your work · Oct 26, 2026 · 5 replies
- Engine-room fault-finding habits that finally fixed my rooftop water tank sensorDebugging · Oct 25, 2026 · 3 replies
- Latent ESD damage: why a board can pass test and fail three months laterDebugging · Oct 23, 2026 · 4 replies
- I2C works on the bench and fails in the enclosureQuestion · Debugging · Oct 3, 2026 · 5 replies
- PCB design: a small thing I am quietly pleased withDebugging · Sep 25, 2026 · 11 replies
- Four-layer boards cost almost nothing now and fix most noise problemsPCB design · Sep 22, 2026 · 12 replies
- Firmware: how do you keep going past the interesting part?Question · Debugging · Sep 20, 2026 · 7 replies
- PCB design: what has actually changed in the last year?Firmware · Sep 19, 2026 · 3 replies
- Debugging: six months in, including what did not workFirmware · Sep 19, 2026 · 7 replies
- Battery-powered air quality sensor, eleven months on one chargeShow your work · Sep 14, 2026 · 12 replies
- Firmware: an unpopular opinion, argued properlyPCB design · Aug 25, 2026 · 4 replies
- Firmware: where would you tell a beginner to start?Question · Show your work · Aug 22, 2026 · 9 replies
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