Apologies for the number of probably very basic questions I've asked over the past few days. But I could use a little more help. There's an existing circuit I'm trying to hack in to, but before attempting it, I wanted to get the basic idea of something down first. Let's say I have a circuit, in th…

Arduino pin to drain a circuit?

system August 19, 2010, 6:56pm 2

I'm really very confused at what you're trying to do.

Are you simply trying to control whether an LED is on/off from a digital output? :\

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