I'm making a carputer and want to have my Pi do a graceful shutdown when the car turns off. I can have the Pi take power from the always-on 12V supply through the HiFiBerry Amp to get power, but how do I detect if the accessory power (also 12V) is ON/OFF to initiate a power up and power down? It'd also need to initiate startup automatically somehow when the accessory power becomes live.
Statistics: Posted by etzabo — Wed Sep 11, 2024 8:57 pm