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DIY smartphone notification LED: Easy 3.5mm jack hack!

Discover how to build a simple and effective external LED light for your smartphone with this hands-on tutorial. Using a ...
Hackaday

You Can Use LEDs As Sensors, Too

LEDs are a wonderful technology. You put in a little bit of power, and you get out a wonderful amount of light. They’re efficient, cheap, and plentiful. We use them for so much! What you might not ...