Posts Tagged ‘quick tip’

Using a device tree overlay it is easy to turn off the Adafruit display backlight once the Pi goes into power-off state. Simply add the following line to the end of /boot/config.txt dtoverlay=gpio-poweroff,gpiopin=18,active_low=”y” This will drive this particular pin #18 (which is responsible for the backlight on the Adafruit PiTFT display) low on shutdown, and…