Advice safe shutdown before doing stupid things! please
I use a Rock64 with version Volumio-3.212-2022-01-28-rock64 in the car.
I bought this Alimentation UPS basée sur un super condensateur pour Raspberry Pi et système intégré, entrée 7-24V, sortie 5V ou 12V - AliExpress to simplify switching on/off with the car’s ignition.
I only tested the object in the car and it provides 5v on the power output and 3v on the External Power detection pin.
So I have to connect the 3v to give the information to the Rock’s GPIO.
GPIOs are all free in my configuration https://files.pine64.org/doc/rock64/ROCK64_Pi-2%20_and_Pi_P5+_Bus.pdf
Will a simple "To implement it, you will need to edit the /boot/config.txt file on the SD image, adding a new line at the end, and then save the config.txt file. dtoverlay=gpio-shutdown,gpio_pin=??? " work and on which Pin?
Thanks in advance, Bernard from France