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 ...

The controller in question is a 4QD Porter 10 so an extra component is a DC-to-DC converter to provide a floating ground for the Arduino.

Beyond this circuit, the main bridge transistors could be replaced with mosfets to increase efficiency, or a motor driver chip could be used. These chips include much more protection – like ...