Press-to-reboot program for headless Raspberry Pi. Forked from Adafruit-GPIO-Halt
Clone repo and compile/install:
git clone https://github.com/alanpullen/Pi-GPIO-Reboot/
cd Pi-GPIO-Reboot
make
sudo make install
Then edit the rc.local file to start up our code automatically at boot time:
sudo nano /etc/rc.local
Just before final “exit 0” line, insert this line:
/usr/local/bin/gpio-reboot 26 &
Change the “26” to whatever GPIO pin your shutdown button is connected to (the other leg of the button should connect to a ground pin). On Pi models with the 40-pin header, GPIO 26 is at the close to very end (nearest the USB ports) with an adjacent ground pin, so it’s very convenient to connect a button across these two pins. On older Pi models with a 28-pin header, GPIO 7 is similarly situated at the end of the header.