I am a new to arduino uno. Recently I start to play with Micro Servo 9g motor, but it began to rotate 15-20 degree after connected the GND and VDD(5V from another board). When put to VDD again, it rotated another 15 degree.
I think the motor should stay stalling when just connecting to VDD and GND, then rotating after receiving PWM signal normally. I searched on the Internet about the possible reason, but it seems no one have the same issue. So I would like to ask where goes wrong, if the motor is broken or something else?
Thanks a lot in advance.