That’s the idea behind [BetaChecker’s] two-axis stepper motor, which looks like it has ... a large number of L293 H-bridge chips and an Arduino Mega. A variety of sleds, each with neodymium ...

This build relies on a solid-looking lead screw to move a carriage up or down. An Arduino Nano acts as the brains, a stepper motor drives the lead screw, and a small display shows stats such as ...