GEEETech Inductive Sensor Holder

Just a remix without radial fan mount

Sensor:
LJ18A3-8-Z-BX-DC-6-36V-8mm
http://www.ebay.com/itm/LJ18A3-8-Z-BX-DC-6-36V-8mm-Inductive-Proximity-Switch-Sensor-/351221468247?hash=item51c66e4c57:g:ZgEAAOSwUEVYDd7P

See photos for schematic. Here's a description in text. Also for coding see youtube video. IMPORTANT: Dont forget to add G29 to your slicer Gcode.

I am using the GT2560 Board (2 wire connteor to Z-min endstop). I removed the two connectors from my z-min endstop. The positive z-min goes to the black sensor wire via a 10k resitor. The negative goes directly to ground, in this case wired to -12V ground from the main power line.
The blue ground sensor wire goes to ground and is wired via 10K resitor to the positive z-min. This is essential to prevent 12v going into a 5v line.

The brown sensor wire goes directly to 12V+ connection going to the GT2560 which comes from the main power pack (IE take it from where you want as long as its 12V always on).

The Code I nee