Sunhokey I3 12mm Inductive Sensor Adapter

This mount attaches a 12mm inductive sensor to the stock 40mm hotend fan. It's probably the easiest way to attach one to the Sunhokey I3.

(In case someone wants to know which x carriage I'm using: it's this one http://www.thingiverse.com/thing:900225

Note: the MKS Gen boards have HARDWARE pullups and therefore you need a sensor that pulls the signal pin LOW when triggered. I had one that is active high (Part number: LJ12A3-4-Z/BY) and therefore I had to add a MOSFET/BJT inverter...