Easy, Simple Dark Detector

Hello! Today, you will be building a Dark Detector. It's easy, simple, and really cool. I got the idea from a magazine and made it my own. This is my first instructable, so I hope you like it! The Parts For this instructable, you will need: 2n3904 NPN transistor (1) LED (1) Breadboard (1) Jum...

By: DerpyCyclops



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