I had posted awhile back on this but haven't gotten anywhere. Will try to describe as best I can what I am hoping to accomplish. I have 2 devices. An I/R beam reflected that has an alignment LED on it and a 5v relay that closes a NO momentary contact switch. These devices are connected to each other through a processing unit. The proprietary software only uses the I/R to trigger a camera for scoring purposes and nothing else. The processor sends signals to the relay whenever it wants the machine to cycle (foul, no tap strike or extra ball in the tenth frame). I want to add a circuit between the I/R unit and the relay so that whenever the beam is broken it triggers the relay to cycle the machine. Ideally it would do so after a 3 second delay but I don't think it is that critical. Can anyone point me in the right direction or give me an idea how I can accomplish this?