Rack & pinion autolevel for Prusa i3

Update: Mount revisited, improved for more tightened fit.

Attachment for X cariage of Prusa i3. Implement autoleveling idea showed by @mjrice in this post. Pinion made for optical endstop.

On my printer, X axis homing in maximum position, so I make some changes in firmware, fix mistypes and stripout some unnecessary Z movements.

New code available on GitHub.

Video: one, two

Print Settings

Printer Brand:

RepRap

Printer:

Rafts:

No

Supports:

Resolution:

0.2

Infill:

Notes:

Support not needed, because parts has inbuilt one.