I just used a simple 12v relay board. You power the board with 12v and it outputs 12v to the motor. I added a couple of switches to the underside of the playfield. When these push down the ones that were added push down with it turning on the motor. This is a little bit time consuming if you are going to wire more then a couple.
I thought this was the simple choice. Took only 5min.
The sounds and switched jet taking off mod are going through a controller. 2 triggers. One at launch switch which starts the routine then one on the drain switch which interrupts the routine to return back to starting position. This way the jet knows when the next ball launches. We all know the ball time of this game
I can add 24 different sounds. 8 on takeoff switch, 8 on drain switch, 8 when the machine is idle. So far I only have a few effect sounds, but I would like to use them all eventually. Any ideas on sound?