just i couple of qs about robot arms,
if a robot arm was 1m in height are ad had a 1m reach would the arm have stepper motors or just dc motors with gearboxes with some kind encoder to tell it where it is. because i was thinking would the stepper motor be able to hold the arm up on its own, if not would a gearbox bo needed, what sort of power do stepper motors go up to.
adam