This power switch will shutdown the Pi safely so that you don’t have
to worry about corrupting your SD card and file system,
which can happen if you just disconnect the power abruptly.
-
Add config device tree overlays
sudo nano /boot/config.txt -
Insert this to the bottom
dtoverlay=gpio-shutdown,gpio_pin=3,active_low=1,gpio_pull=up -
Create file
sudo nano /etc/udev/rules.d/99-gpio-power.rules -
And insert this
ACTION!="REMOVE", SUBSYSTEM=="input", KERNEL=="event*", \
SUBSYSTEMS=="platform", DRIVERS=="gpio-keys", \
ATTRS{keys}=="116", TAG+="power-switch" -
And restart raspberry pi.
