Treasure Finder

Who hasn’t dreamed about owning their own metal detector and searching for buried treasure, or at least a few dropped coins? In this project, we will build a metal detector based on a dual oscillator circuit. One oscillator is fixed, and the other varies depending upon the proximity of metal... Read more »

Whack-a-Mole Game

Jim Chen designed an excellent electronic "Whack-a-Mole" game using 555 timers, LEDs, and bent-diode touch sensors, that you can build on a solderless breadboard Read more »

Take a Hidden Picture

Take a picture is a fine-art project by artists Brad Blucher and Kyle Clements. In the exhibit, the human eye see is only able to see blank surfaces (in our case, blank canvases). People walk up to the show space and see blank canvases hanging on the wall. They see... Read more »