The machine uses a ‘grbl’ controller, which has an Arduino-based circuit that includes multiple outputs, including a powerful 24V pwm signal that is generally used to drive a 60-80W spindle motor.

It’s an easy to build high voltage power ... Arduino to something that will arc an inch and a half. The next step building the flyback driver. [Andrew] used a MOSFET and MOSFET driver for this ...

EC motors are DC brushless motors that are controlled by external electronic circuit board ... their way into several small appliances with high power output needs, including conveyor belts ...