What sclpunk said. Do not wind your own coils or make your own controller boards. Sure you could do it, but if you really want to scratch build a game you want to make it easy on yourself I’m some respects. It’s a huge undertaking if you’re wanting to do a modern style pin. There is a great reason why pin companies have teams of people doing each title with specific focuses.

If you don’t already own pins and aren’t familiar with all the parts and hardware I’d really start there. Try a restore first maybe. Most people underestimate the work involved, myself included.. as I enter year #4 And have more years to go. I thought it would be a lot less time. If I hadn’t owned and restored a few pins beforehand I would have been in over my head

It wasn’t clear to me — are you wanting to create a stern mando from scratch or your own design mando or your own design ‘similar to’ mando??

Take a look at the homebrew section of pinball life. You’ll probably either end up with a 48 or 70v high voltage for coils off a psu and a separate 12/5v one for logic and other odds and ends. Yes you can do something simpler with arduinos, relays, etc.. but if you’re shooting for a modern complex pin I still would push you hard towards fast or multimorphic boards— and then join the associated slack channel. Coding is way way easier with MPF unless you’ve got a solid python skillset. There’s an active forum for mpf as well. That said - it’s not exactly a cakewalk.

How goes the project?