I have a 12v motor, scavenged from an inkjet printer (there isn't a model # on the motor). I have a pulley set up on the motor, that moves a load of about 375 grams. When I connect the motor to 12v, the pulley "jumps"(like a stepper motor) about a mm or so, but then stops, and wont move any more until it is disconnected and then reconnected to 12v. Why is this happening? I wasn't expecting this to happen, but actually I am building a small scale cnc, so this is actually pretty useful. The only thing is, I need a way to make this more precise, so that I can tell how much the motor moves each "jump". I would also like to know, if it is possible, how to make the motor run continuously, without stuttering.
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