Uploaded a schematic, some openSCAD files for motor mounts and controller housings, and a component list.

Still to do:

• Design motor mount for focus control
• Add in code for focus control
• Review modes and see if I can't add a "centre slide" function/mode
• Tune mouse control of XY motion

One probably concern is how to keep the lens from crashing into a slide. Ideally you'd need a way to know which lens has been selected (2 hall switches and 3 magnets?) and then a calibrated focus height... too tired to think of that now.