This aims to be a super-simple motor controller, based on an Arduino Nano and a couple of Darlington pair ICs. It controls cheap 28BYJ-48 steppers, as used on the OpenFlexure microscope and stage.
Firmware/Python code by Richard Bowman, University of Bath, PCB design & production by Sanga Valerian, STICLab.
(c) The authors, 2017, released under CERN Open Hardware License (hardware designs) and GNU GPL v3.0 (software) 2017.