“The pen plotter in question is a DIY machine that Oaks constructed using linear rails, stepper motors, and an Arduino Uno board with a CNC Shield that runs Grbl firmware. The computer connected ...

All of the hardware, except for the camera, is controlled by an Arduino Giga using a CNC shield; the camera is directly under the control of a host computer.

Update: The Cronos grbl board mentioned below gets analysed in this further EinW blog My small cnc mill project needs motors (so I am told) that are too powerful for the normal drivers included on ...