LarryD:
BTW
If you are trying to power the motor with the Arduino, don't!You need an external 5 voltage power supply fo the motor.
.
+1
The spec for the motor does not give current requirments but 300gm CM implies a fairly high one, more than the arduino can supply.
Th fact it vibrates makes me think its trying but cant quite make it.
Surprised the arduino reg is functioning lso with that sort of load.