Weekend Projects - Dark-Detecting LEDs

From the creator

Complete instructions for this episode of Weekend Projects can be found at http://makezine.com/projects/dark-detecting-led/ Build a simple light-sensing circuit that switches an LED on when the lights go out. Combine four common components - transistor, LED, resistor, and phototransistor - into this fun and easy circuit. Share your mods, tips & tricks over on the project page!

Published 2014-10-23 · Watch on YouTube ↗
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