What are some good sites for some small motors? The voltage must be below 12 and the amp rating doesnt matter. Thanks
Marks256 said:For a robotic arm i would suggest stepper motors. Standard DC motors do not have enough accuracy to be used as an arm. Correct me if i am wrong, but the whole point of a robotic arm is precision, right?
dknguyen said:If you energize a stepper but hold it in place, it won't move but and without feedback all you can assume in your control system is that it did. Either way, you need feedback, in which case a DC motor probably wins since you can probably find a gearbox more easily and move in smaller increments than a stepper.
Marks256 said:Every robotic arm i have seen have had heavy duty stepper motors in them (with gears, of course).
Nigel Goodwin said:Like 'dknguyen' I've never seen one with steppers either, you need positional feedback so you know where the arm is, a stepper is useless for that.