Something like this?
Easy Stepper on RepRap.me
Wiki Article on it: Easy Stepper Wiki
It doesn't give you the feedback you're looking for, but it does allow you to test driver/motor combinations and adjust the VRef. Was actually considering getting one myself.
Easy Stepper on RepRap.me
Wiki Article on it: Easy Stepper Wiki
It doesn't give you the feedback you're looking for, but it does allow you to test driver/motor combinations and adjust the VRef. Was actually considering getting one myself.