The GP2040-CE V5.6E - Fight Board I am using supports a variety of tiny OLED screens. These can be used for joystick/button testing purposes, and checking what settings are currently active, e.g.: SOCD mode, turbo mode, input mode (PS3, PS4, NSW, PC, etc). These are dirt cheap, and I picked up a 128x64 pixels 1,3 Inch one for 6 bucks. I intend to mount this underneath, visible through the plexiglass. The idea being that if I ever get confused on why something is not working, like maybe I did not press the correct key combo to go into Nintendo Switch mode, I can quickly check what input its in by looking at the bottom.
Anyway, time to mount the OLED and fight board using some PCB standoffs. I used M3 10mm ones for the fightboard and M2,5 20mm ones for the OLED. Drilling 2.5 and 2.0 mm holes respectively where I then just 'screw' the standoffs into. The OLED in particular has tiny holes, and there was no real room for error during drilling. So I practiced on a price of spare wood first, to make sure my measurements of the hole distances were accurate.
I also noticed that the joystick would not fit. Its base plate would, but I overlooked the fact that the joystick extended slightly beyond that base plate in two spots. A chisel took care of that problem.