RepRapPro Huxley - Proximity Sensor Upgrade

thingiverse

This thing allows you to upgrade a RepRapPro Huxley with a modulated proximity sensor that provides axis homing in both the X and Z axes. Instructions Print one of each of the extruder fan duct and the proximity sensor clip. The proximity sensor (https://reprappro.com/shop/components/modulated-proximity-sensor-and-loom/) should be fitted to the extruder fan duct using two M3 x 6mm countersunk screws. The fan duct (original RepRapPro Huxley Duo part here: https://github.com/reprappro/huxley-duo/blob/master/STLs/714.STL) and sensor assembly can then be fitted to the tool carriage using the lower pair of holes. Two of the countersunk screws originally used to fit the X-axis micro switch can be used to do this. Finally, fit the clip to the X-axis motor mount. The proximity sensor should just clear the lip (~1mm) when the tool carriage is brought close to the X-axis motor mount. You will also need some electronics capable of using the proximity sensor (I use this: https://reprappro.com/shop/components/duet-pcb/) and you will have to modify the homing and bed levelling macros to ensure the X datum is set correctly once the proximity sensor is triggered and that the automated bed probing is carried out when the sensor is above the bed.