Adafruit-Pi GRRL-2-0-Custom-Gamepad-PCB-Only-Adafruit-3015-P-The-Adafruit-Pi GRRL-2-0-Custom-Gamepad-PCB-powers-up-your-Pi GRRL-build-by-removing-the-need-for-point-to-point-wiring-for-the-buttons-&-switches-The-board-needs-a-40-pin-header-cable-to-connect-all-the-GPIO-signals-2-x-wires-for-the-power-&-4-x-wires-for-the-left-&-right-shoulder-buttons-That-s-all-the-wiring-you-need-to-connect-12-x-switches-As-you-ll-see-from-the-tutorial-there-s-still-quite-a-bit-to-do-but-the-Gamepad