During one of my lab session I faced this problem and couldn't find any good answer. As far as I know for a stepper,
- Reversing the direction of current will change the direction of rotation.
- Number of pulses applied at each pole will determine the position.
- Frequency of the pulses will determine the speed.
But I dont know how to achive these with a servo. For my understanding servos control speed and direction of rotation on their own.
It would be great if some one can tell whether my understanding is correct or not.