Tiny motors used for haptic feedback and vibration come in a variety of shapes and sizes. The most familiar is the “eccentric rotating mass” (ERM) variety which just spins an imbalanced weight ...

When the Arduino detects the rumble motor signal switching on, it turns on a relay, supplying power to a hefty one horsepower induction motor, fitted with an eccentric weight.

Hi guys, I need two buzzers alternating on / off on one pin. Is it possible to get ‘opposite’ transistors in series? One that grounds when the base goes high, one that grounds on low? In that ...