[Michael Ross] is a photographer who has been getting into light painting recently. He’s come up with his own RGB light wand to create some amazing images, and also written a very, very thorough ...

Discover how to build a simple and effective external LED light for your smartphone with this hands-on tutorial. Using a 3.5mm audio jack from old wired earphones and a small LED, create a practical ...

You can fade out and fade in the light of an LED automatically by using Arduino and a simple code that is described below. Even though the Arduino board cannot output variable voltage on its digital ...