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pull down resistor? Answered

is the pull down resistor important to the circuit? it seems like when the button isn't activated and the pin isn't in use it doesn't need to be grounded

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randofoBest Answer (author)2017-07-13

It will likely work without it, but it is better not to leave it "floating".

The pull down resistor ensures it turns off / on quickly, and that it doesn't get any false positives or leak voltage.

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