[Frank Herrmann] had an interesting idea to turn a geared DC ... motor rotation and listen on the ‘stepper motor driver’ interface pins hooked up to the motion controller upstream. The Arduino ...

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 ...

A note here, adding 100Ω resistors in series with the arduino pins could help limit pin current if someone shorts the motor connections to either rail ... the positive rail can be any dc voltage – ...