Mechaduino is a board that sits on a regular stepper motor and turns it into a servo ... to get the accuracy they’ve promised. he Arduino-sounding bit of the name comes from their full ...

At it’s heart, it’s a straightforward design, using a linear rail and a leadscrew driven by a stepper motor. Control is via an Arduino Nano, with a few push buttons and a 16 x 2 LCD display ...