Autofocuser Motor Mount, 100T pulley adapter for the coarse focus knob, and endstop system for the WO Star 71 Telescope. This is designed to work with this sourceforge project, though it should work with any autofocuser system.
https://sourceforge.net/projects/arduinofocuscontrollerpro/
The motor I used is a NEMA 14 PG5, along with a 20T GT2 pinion. The 100T adapter is made from this openscad file:
http://www.thingiverse.com/thing:16627
I also made a project box for the arduino nano, but that would need to be customized to how you choose to do your wiring and what options you choose.
All parts other than the 100T pulley designed in Fusion 360.
For the endstops, I simply added them on the 12v power line to the DRV8825, and used common microswitches in an NC state.
| AF_endstop_mount.stl | 32.1KB | |
| AF_endstop_slide.stl | 31.7KB | |
| AF_motor_mount_NEMA14.stl | 154.8KB | |
| scope_focus_pulley_100T.stl | 1010.2KB |
