Just starting -feeling confident. a couple of questions

  1. Time slicing. I don't need it for this project. The sort of reason for thinking about it is: a process which is controlling motion and needing to check every 1/10 sec for inputs on any sensor.

Turning a motor on is all that is needed to get it going. Turning it off after the proper duration does not require continuous monitoring. You can read sensor input, then see if it is time to turn the motor off. No "time slicing/multi-tasking" required.

Turning a motor exactly 60 degrees, at an average speed of 600 rpm is going to be a challenge, no matter what motor or drive arrangement you come up with.