Quote Originally Posted by DoulosDS View Post
Anybody know how to get precise control of a DC motor? I'm thinking a microcontroller with a hall effect sensor on the motor shaft counting full turns. An A/D input would monitor the current or voltage and count the armature pulses during the revolution to determine angular position. Then it should apply a reverse voltage pulse for rapid stopping.
Or a conductive disk turning around with the axle with a drag-contact and a non-conductive area... Ofc. that won't help much if it turns too fast...