Attempting to build add on automation for my Velux skylight. Requires a NEAM 17 Stepper Motor. I've tested this with my extruder motor which is a Kaysan
http://www.kysanelectronics.com/Products/Detail.php?recordID=7850

Posting the STL files here, the scad files can be found on github.

https://github.com/krbaker/3dprinting/tree/master/velux-automation