One of the first projects that most people do on an Arduino is to light up or flash an LED. It seems ultra-simple because it ...

OK, it's not really a black light. It's better to call it what it is: ultraviolet light. Let's start with a quick overview of light. Of course, light is an electromagnetic wave (oscillating electric ...

Let’s say you want to blink an LED. You might grab an Arduino and run the Blink sketch, or you might lace up a few components to a 555. But you needn’t go so fancy! [The Design Graveyard] explains how ...

Alina Bradford has been writing how-tos, tech articles and more for almost two decades. She currently writes for CNET's Smart Home Section, MTVNews' tech section and for Live Science's reference ...

Now that incandescent bulbs are on the way out, LED bulbs are a clear choice, but there are things to keep in mind when buying them. Originally hailing from Troy, Ohio, Ry Crist is a writer, a ...