I designed this button plate to improve quality of life in racing simulators. Operating a mouse and keyboard with a headset on is difficult and this wheel mounted thumbstick negates the need to move them back and forth between a desktop and sim rig. The bottom right cluster uses a mini joystick and two buttons for full mouse control on the wheel. There are 4 additional locations for buttons, and two locations that can fit rotary encoders, potentiometers, or buttons.
The plate includes integrated wiring tie down points (using zip ties), strain relief for the USB connection, a replacement joystick nub (needs to be sliced off of the side of the print), and toolless snap in mounting of the controller board.
This plate will fit most 320mm or 330mm racing wheels. There is a second set of holes thats allows the plate to be shifted for wheels with different proportions.
Parts list here: