grbl is stepper motor controller firmware for three-axis cnc machines, intended to run on Arduinos ... that are too powerful for the normal drivers included on grbl Arduino shields (or integrated ...

This familiar footprint manages to contain everything you need for a three-axis machine. The purple boards slotted into the pairs of SIL headers are Pololu Stepper motor drivers. Going this route ...

As [Curious Scientist] demonstrates, this is a relatively simple motion control project ... a carriage up or down. An Arduino Nano acts as the brains, a stepper motor drives the lead screw ...