Hi. Here's a noob question for you I have one circuit with a power source (batteries) powering an led, controlled by a switch. I want this same switch (single pole) to also set an arduino pin HIGH when it is pressed. Can I use a transistor? From what I've been reading here - Using Transistor as a…

Using one circuit to switch another - (basic!)

mrboni May 18, 2011, 1:21pm 7

Yes that worked.

Thanks!