I'm in the middle of figuring out how to hook up different consoles to one controller board, where for example 3 consoles are connected to 3 buttons.
Pushing a button will power on one console, turning off the console that was previously on (if that's the case) and directly picking up the AV signal from the new console to the monitor.
I've heard from someone that an easy fix can be to route the av cable to the power cables, so it automatically switches.
But.. I have no idea how to do that. If someone could point me in the right direction or suggest a better solution, I would be very thankful.
I would just solder all the yellow cables together, red cables together, and white cables together. Then get a micro controller like the tennsy. You can then use a push button and a relay to turn on and off each console. When you push a button have it turn off all the relays and then turn on the relay for the console you selected.