Okay so I am a complete noob when it comes to circuits and anything electrical but for a college project I need to incorporate electronics. The project is based off Dynamic Mechanisms, basically using gears, pulleys, cams etc. to make a project become a playable scene. Therefore my circuit needs to be perfect for my project to work. Once I start operating the scene I cannot have any room for error. But here is my issue... I have a basic light bulb circuit which is operated by a push button switch. When this switch is turned on the light source then activates a light activated sound module which plays a song. However this switch is activated by an involute cam (snail like gear) , when this gear is at its highest altitude it will operate the switch. however by the time the gear comes back around to turn off the switch the song is only a third of the way through. I was wondering is there a push button switch that will allow you to hit it 3 times and on the 4th it will turn the circuit off? so the gear hits the switch and the circuit goes on and then when the gear hits the switch again the circuit stays on until the switch is activated 4 times? Probably a stupid question but I have been looking for switches online and I am in over my head. Thanks for any help.