I'm interested in buying a high-torque stepper motor. Eventually the goal is to incorporate in a device that will be used to lift the lower part of a human leg below the knee. Based on estimating the weight of a human leg below the knee it should be able to hold a torque of at least around 3 N*m. So far the only motors that I could find within budget (< $50) is here with a corresponding driver here.
1) Does anyone have any experience with this vendor (oyostepper.com). Or can anyone give reasons to or not to purchase this stepper motor? Or is the budget too unreasonable for a decent quality stepper motor with this kind of holding torque?
2) Could anyone recommend what kind of battery would be needed to power this motor?
1) Does anyone have any experience with this vendor (oyostepper.com). Or can anyone give reasons to or not to purchase this stepper motor? Or is the budget too unreasonable for a decent quality stepper motor with this kind of holding torque?
2) Could anyone recommend what kind of battery would be needed to power this motor?