Cubo de motor con peso descentrado, también conocido como motor vibratorio

The little offset weight really packs a punch for something this small — you can feel it buzzing through the whole board once it gets going. I used it in a haptic feedback setup and the vibration is way stronger than I expected from a cube this size.

Spun this up on a breadboard project and the vibration is way stronger than I expected from such a tiny cube. The shaft spins fast enough that it rattled itself right off my desk the first time I powered it. Fun little motor.

The little off-center weight really does make the whole thing buzz hard once it spins up. I wired it to a coin cell and it rattles across the table, which is exactly the chaos I wanted for a prank button.