Quoted from Rdoyle1978:Understood - the software should be the easiest part. I'd be more than happy to jump on that, but we'd need Mike's code to start with (or somebody to copy an SDcard with it on there). I have 5 or 6 Pis ("Pies?") that are up to the challenge. I think I have a Pi Nano somewhere, which might be the most cost effective option, but only if we can source some of the other parts.
Is there a BOM somewhere? I don't have one of these mods so I don't know what is required. Yes, a 19" LCD screen (cheap) and the Pi, but I am not familiar with the switch matrix board. Can somebody post some pictures? There's almost certainly a way to do this, parts are swappable. Did Mike mention which parts are the most difficult to find?
You can get a sense for the components required in his documentation here: https://pinside.com/pinball/forum/topic/pmd-cftbl-lcd-hologram-mod-version-20#post-1369973
The hard to obtain part of the hardware is the part Mike refers to as the interface board, it's his own design AFAIK, not an off the self board. It feeds the events to the RPi.
I don't know Mike's stance on the code, if he open sourced it or would even care if we try reinventing/copying from it. Probably best to have his blessing if we do proceed.
Edit: I see Mike replied while I was typing the above, thanks for the info Mike! Makes sense. Thoughts on the interface board and code? Do you care if we reverse engineer/copy your design?