Raspberry Pi
- Seedling Pump noise causing false triggers on Raspberry Pi GPIO Just plugging the pump into the socket triggered an interrupt on an input with a long cable. The fix to try: an optocoupler at the Pi end.
- Budding Zigbee flood sensors in Home Assistant Aqara sensors on ZHA with a SONOFF coordinator: they work, but need solid coverage and up-to-date coordinator firmware.
- Budding Powering a Raspberry Pi from a 24 V AC irrigation line Rectified 24 V AC gives about 35 V DC – too much for typical buck modules. And the under-voltage warning turned out to be the USB cable’s fault.