@paul_uk Awesome thanks for this. I was using something from Katie Snow long ago but this seems a bit easier.

I just got it working with the following python script using rgbcommander's servostik linux command line. Hardware mode is not needed.

http://users.telenet.be/rgbcommander/

from gpiozero import Button from subprocess import check_call from signal import pause #Functions def onGpio3Open(): #Arcade 1up switched to OFF check_call(['sudo', 'poweroff']) print("gpio3Released") check_call(['sudo', 'poweroff']) def onGpio17Closed(): print("gpio17Pressed") check_call(['sudo', './SetServoStik', '8']) def onGpio27Closed(): print("gpio27Pressed") check_call(['sudo', './SetServoStik', '4']) #Main Execution Starts Here gpio3Btn = Button(3) gpio3Btn.when_released = onGpio3Open gpio17Btn = Button(17) gpio17Btn.when_pressed = onGpio17Closed gpio27Btn = Button(27) gpio27Btn.when_pressed = onGpio27Closed pause()

@unicornsonlsd
I did this using the RGB Commander utility. It sets the servo stick from 4/8 way automatically depending upon the game you launch in MAME.

DISCLAIMER: I'm using RGB Commander v.3 with one of the older RetroPie Jessie images. Haven't tested the current v.4 with the newest RetroPie 4.4 Strech image. Might be worth a try though!