Below is the code my 9 year old son is using for his Science Fair project. It is supposed to turn off the siren when the phone is plugged in. It should do this by identify ing when power is being pulled by the phone. It's not working! It was working and has stopped. His project is due tomorrow and …

If Else statement when identifying voltage? HELP! Science Fair Project

system November 14, 2012, 10:45pm 5

He's 9. He doesn't have a potentiometer. The phone cord is 5VDC, does that help?

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