In this experiment we are going to work with a sensor which is a resistor that depends on light. In a dark environment, the resistor will have a very high resistance. As photons (light) land on the ...

Ever have one of those weekend projects that takes on a life of its own? [Michael] did, and the result is this PenguinBot. While [Michael’s] wife was away for the weekend he happened upon a broken toy ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...