Saturday, March 3, 2012

What can I use to break an electrical circuit after an adjustable amount of time?

I am making an electrical vehicle running off of AA batteries and I need a way to cut the electrical current after a very precise amount of time. I am entering in a competition and do not know the distance the car needs to travel until right before we go on. So I need to be able to program in the time in a couple of minutes. Any product recomendations would be great. Thank you for your help!

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