How-To: Motors

Step 5: Vibrating Motors

Vibrating motors are commonly found in mobile devices, and are frequently used as means to covertly signal the occurrence of an action.

Vibrating motors are constructed in the same way many as DC and stepper motors, except at the end of their rotors, they have a counter weight extending off of the edge. As the rotor spins, the counter weight is 'thrown' in a circular motion causing the entire mechanism to to shake.

The intensity of vibration depends on the size of the motor, as well as the counterweight.

Above we see a motor that is fixed to a piece of sheet metal. Notice how the sheet metal undulates at the vibrating motor spins.

Comments

[cesar harada]

Vibrating unit for modular robots :) http://www.instructables.com/id/How-to-build-your-Modular-Vibrating-Robot/