and follow Adafruit’s procedure: https://learn.adafruit.com/adafruit-dpi-display-kippah-ttl-tft/installation

Here is the layout for the jack connector :

And here’s the layout from the potentiometer from a review on https://www.amazon.co.uk/16x2mm-Double-Taper-Duplex-Potentiometer/dp/B00O9Y6Z70 : The pin layout (wheel down and pins facing up) far left-ground, (call it pin 1) from the far left pin 1-ground. moving right is 2-right input, 3 left input, 4-left output, 5 right output. 5=far right side pin.

Download and install latest version of retropie on a 8 Gb (at least) micro sdcard.

Controller was inspired by Adafruit Pocket PiGrrl tutorial.

I’ve connected it on a Xin-Mo encoder since mostly all ports are used by the display.

jstest-gtk is a very nice program to debug it.

If you have sound issue, try to add thoses lines to your `/boot/config.txt` :

disable_audio_dither=1
set audio_pwm_mode=2 

Reference : https://github.com/retropie/RetroPie-Setup/wiki/Sound-Issues#white-noise-fix

NeoGeo controls didn’t worked so I had to edit /opt/retropie/emulators/config/fba/fba2x.cfg file and change START and SELECT mapping, see https://github.com/retropie/retropie-setup/wiki/Neo-Geo like :

[Joystick]
# Get codes from "jstest /dev/input/js0"
# from package "joystick"
A_1=3
B_1=1
X_1=2
Y_1=0
L_1=4
R_1=5
START_1=9
SELECT_1=8