Driving a brushless DC (gimbal) motor can be a pain in the transistors. [Ignas] has written up a nice article not only explaining how to do just this with an Arduino, but also explaining a little b… ...

An LCD accepts the gear diameter and number of teeth. The stepper rotates the correct number of degrees and another stepper lowers the cutting head which is spinning with a common DC motor.

ZeroPi is capable of controlling 11 micro servos and 8 DC motors at the same time, or four stepper motors. 4-channel SLOT module is compatible with common stepper motor and DC drive motors and ...