Get close enough to this raven and you’ll set off the PIR sensor, which triggers ... 12-volt power LED. This bird’s brain is an Arduino Nano, which is protected from the 12V supply with ...
One of the top reasons people switch to LED bulbs is their promise to last for years and years longer than incandescents. But many know the disappointment of watching their LEDs flicker and die ...
Much less is known about the inventor of the LED itself. As it turns out, the story is a tragic one about a young and extremely talented scientist who spent his working life as a technician in ...