Linear stepping with the Linistepper or How smooth is smooth?
for more information. If you REALLY need micropower, You would be better off with a DC motor and a good feedback like a quadrature encoder to close the loop and allow the precise positioning and rotation OR use a small stepper and turn the entire driver circuit OFF between each step so it only uses power while moving a step. The linistepper does not have an option to turn off the power, but it is an open source project, so anyone could try to add it. Both these micropower systems will require some clever engineering on your part. The easy suggestion? Just buy a decent sized lead acid battery and use a small stepper motor and a linistepper.
