bigBADbenny wrote:A joycon interface could work...
Joycon interface is great (any button/resistor combo, but you need something for it to talk to, ideal if you have a nexus 7 isntall. I'm thinking that in the magical future where I have more time and money I'll grab a DAMD steering wheel, get some steering wheel buttons, and interface them to the N7. Joycon EXR install is pretty simple, but you do need a laptop to calibrate it first.
Edit: just had a thought - you could use a raspberry pi with the joycon interface and write some things to do arbitrary electrical things - but honestly at that point, you're better off using an arduino for the whole thing, rather than an computer/usb/etc. It's also a lot more complicated to do.