Here’s a simple project for your Halloween celebration ... we decided to build a small dark detecting circuit with 2 yellow LEDs based on this Evil Mad Scientist Laboratories design.

Sometimes the most useful hacks are also the simplest ones. A case in point is the LED and resistor assembly that [Skippy] recently posted on his blog. The idea is to solder up some pre-made ...

Discover a surprising and effective way to transform an LED bulb using super glue. This simple yet ingenious technique ...