GEEETech Inductive Sensor Holder

thingiverse

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, check out the coding on YouTube. Don't forget to add G29 to your slicer code. I'm using the GT2560 Board with a 2-wire connector 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 resistor. The negative goes directly to ground, wired to -12V ground from the main power line. The blue ground sensor wire goes to ground and is wired via 10K resistor to the positive z-min. This is essential to prevent 12v from 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 (take it from wherever you want as long as it's always on). The code I needed was slightly different from what I remixed. If you follow this video, he'll explain the code: https://youtu.be/EcGFLwj0pnA Update: The sensor has become unreliable, so I'm going to try replacing it and see if that fixes the issue. I'm getting inconsistent readings across the bed. Update 2: I've switched to an aluminum bedplate and purchased the new sensor shown in the YouTube video, LJ12A3-4-Z/BX (bought here: http://www.ebay.com/itm/LJ12A3-4-Z-BX-Inductive-Proximity-Sensor-Switch-NPN-DC6-36V-3D-Printer-CNC-/261823325802?hash=item3cf5e2e66a:g:UCUAAOSwNSxVEZA5) You also need to change "#define min_software_endstops" to false if you want to be able to define a " #define Z_PROBE_OFFSET_FROM_EXTRUDER" with a negative number. I've uploaded a second file for the smaller 12mm diameter of this new sensor.