A few questions:
I want to have motors that can be rotated by hand (with an attached wheel or something) but also accurately rotated by the motor.
Could this motor: 30:1 gearmotor
, assuming it was disconnected, be turned by hand? (not directly to the shaft, there'd be some kind of wheel attached.) There wouldn't be very fast, jerky movements. What about the higher ratio motors of the same type, like the 50:1?
Second, a motor driver such as this: dual h bridge driver
would allow me to move the motor and stop it in place, but also set the outputs to a high impedance mode, so the motor could be turned by hand, right?
Third, the back extended shaft of that motor could be used to control a quadrature encoder made of a disk half white, half black, and 2 photodetectors put at 90 degrees from each other from the shaft, right?
So if the answer to all these questions is yes, I could use the mentioned things to make a motor that would be turnable by hand, but also able to accurately move itself (not while being turned by hand obviously)