Digi-Key Technologies has developed a diagramming tool that includes a comprehensive electronic symbol library and an integrated Digi-Key component catalog that allows for a wide range of circuit ...

These light up paper circuit cards were much easier to make than I expected and only need a few inexpensive materials.

12 LEDs have been used to create a simple mini lighthouse in which the beam rotates around the LEDs when applied with power. The project is featuring a full size ICSP connector and a socket DIP ...

A blast from the Elektor archives: this 1998 battery tester uses a simple LED display to reveal a battery’s true condition under load — even below 1 V.