Other that visual and audio, vibration feedback is prevalent in consumer electronic devices. Mobile phones, game controllers, fitness trackers and smart watches among others use vibration alert to convey information and to provide overall enhanced experience to the users. Inside these devices there is a tiny vibration motor that drive this implementation.
This is a cylindrical type vibration motor pre-wired with 2 leads. It's very easy to just, just connect the red lead to positive voltage and blue (or black) lead to ground and the motor will vibrate continuously.
This motor uses Eccentric Rotating Mass (ERM) which is a tiny unbalanced weight attached to the motor shaft. When powered, the unbalanced load rotates repeatedly to give a vibration effect to the object where the motor is attached to.
