Mechaduino is a board that sits on a regular stepper motor and turns it into a servo with a closed loop control of 0.1degree ... However, rather than vaguely promise an open source release ...

Not having one, what do you do? If you are [Tech Build] you go all MacGyver on an old printer and pull out a stepper motor. How does a stepper motor turn into an encoder? Well, that’s the ...