I'm thinking of building some sort of robotic arm and hand (two separate servos) that gives out a piece of candy when a button is pushed. That's not an issue, I can do it, but I want to think of a way to only give out one candy per kid. For example I don't want them to just keep pushing buttons. I …

Arduino candy dispenser

Coding_Badly October 22, 2012, 12:06am 7

If you have an emitter to go with your sensor (receiver) then a broken lightbeam may work.

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