Is there a way to detect whenever a game is running? A signal that is high or low only from when you hit start all the way until it's game over.

The pinball in question is a Viper Night Drivin.

Trying to have my arduino detect if someone is playing.

Thanks,
Magnus

Thing is, I'm gonna hook this game up to an arduino and a webcam. Enabling us all at the office to play from our computers over the intranet. But I need to know when a game is being played so I can prevent others from interfering. And also make some kind of queue system so that when the current players game is over, he cant play again and the next in queue is allowed to play.

All the buttons are wired up and everything works perfectly except everyone can control the game at any time.

Thanks guys, for all the ideas.
I will try them out and see what works. The ideal thing would be to find a TTL signal on the cpu board that doesn't need to be converted in any way, but I've been looking through the schematics for several hours without any luck. My electronic skills just aren't that good I guess. hehe.

I will let you all know how my project turns out and perhaps even post a link to the game. Though the latency will most likely render it not playable over the internet.

Thanks again.
Magnus