The ubiquitous LED continues to expand frontiers and applications with a plethora of sizes, colors, and output lumens. Flashing LEDs that incorporate internal electronics for oscillation offer ...

You’re asking what is LDR? It stands for Light Dependent Resistor or Photoresistor, which is a passive electronic component, basically a resistor which has a resistance that varies depending of the ...

[mircemk] built a slick-looking LED tester with a couple handy functions built in. Not only can one select a target current to put through an LED, but by providing a target voltage, the system will ...

Lighting-emitting diodes (LED) pervade nearly every electrically operated device, broadly serving functions ranging from power-status display to general illumination. With continuing advances in their ...

Energy-efficient lighting is in the headlines as we approach the date at which federally mandated efficiency levels for lights will make ordinary incandescent lighting obsolete. Incandescent lights ...

[Darren] built a clock that uses a resistor to display the time. Well, it really uses a model of a resistor. This extremely tardy entry in the Hackaday design challenge houses all of the electronics ...