Hello,

I'm new to the world of servos and stepper motors. However, I will be taking on a project that will require a very precise servo/stepper. Part of the project will be a laser mounted to the motor and we need the laser beam to move in as short of increments as possible at moderate distances.

Reasonable performance would be an increment of about 3-5cm when shooting 2.5m away. If my calculations are correct, a stepper motor with 3.6 degrees step angle would move the laser beam 15.7cm on the object. That's not going to be good enough.

I have found that digital servos are supposedly more precise than conventional servos, but I haven't found any data that tells me how precise they are.

Thanks, Ben