Let me start by saying this is my first Arduino project, and I'm a little confused with some of the hardware requirements. I should be good on the coding, as I've been programing for a long time now. I want for my first project to build a fingerprint scanner that will unlock an electric strike if t…

Fingerprint reader to open electric strike

system November 8, 2012, 1:43am 5

So like this?

Also, would a 2N3904 NPN transistor and a 1k? resistor work?