“This instructable explains how to motorize a time lapse rail using a step motor driven by an Arduino. We will mainly focus on the Motion Controller that drives the step motor assuming you already have a rail you want to motorize.
For example when dismantling a machine I found two rails that I could convert into time lapse rails. One rail uses a belt to drive the slider and the other a screw. Pictures in this instructable show a screw driven rail but the same principles apply to a rail driven by a belt. There are just a few parameters that require changing during commissioning.”