I have been using the motor in the title as a flywheel for a ping pong shooter. The balls come in below the wheel and are pulled up along two rails to be shot at a 45 degree angle above the wheel.
I have been running the motor with a 12V power supply through an arduino motor shield at the maximum PWM value for arduino of 255 to shoot the balls the furthest possible distance.
After working perfectly for many shots, the motor now makes a terrible noise when powered and barely spins fast enough to shoot a ball 6 inches. I assume the motor itself is broken from reading other posts.
My question is, did something I do cause it to break? Or are these motors simply not made to last long in such applications? I do not want to purchase another one only to have it break again.