Raspberry Pi 4 Pinout - Offset-official/Nautilus-One GitHub Wiki

Raspberry Pi 4 GPIO Source: https://www.raspberrypi.org/documentation/usage/gpio/

RPI 4 GPIO detailed Source: https://www.element14.com/community/docs/DOC-92640/l/raspberry-pi-4-model-b-default-gpio-pinout-with-poe-header