Holder for inductive sensor, for the sunhokey 3d printer ver.2015 This holder allows to mount the sensor to the hot end mount, made by projectearth7 http://www.thingiverse.com/thing:818852, enabling the activation of the autoleveling routine in the Marlin firmware. https://youtu.be/LtTV-hThzyY PLA 30% infill, made with SLIC3R software, 0.3mm Layers To print PLA plastic It has been holding very well. It may not be suitable for the ABS temperatures. 1.- Most sensors use 12v, this signal can't be put directly to the MSK mother board. A voltage divider can be implemented, I prefer to use an optocoupler. http://s4.postimg.org/yzllrve8t/IMG_20150922_222517280.jpg 2.-The output from the optocoupler can be connected to the Z axis limit switch pins. The Red cable provides +5V, Black wire is Ground, and the Blue wire is the signal of the limit switch. http://s22.postimg.org/it2mmh98x/IMG_20150922_230331293.jpg 3.- Check the instructions from Thomas Sanladerer in the following video to configure the firmware. https://www.youtube.com/watch?v=EcGFLwj0pnA PD. Test before you power the sensor, 12V signal can damage the the inputs in the Arduino Mega MKS Gen-2z v1.1 motherboard.