Filament Runout Sensor - mechanical endstop, NEMA-17 mount, fits HE3D K200 K280

thingiverse

Remix of the outstanding mechanical endstop mount created by Brian Hanifin for the Monoprice Select Mini printer. Please review Brian's Thingiverse post for detailed information on integrating the sensor with Octoprint and his original design details - https://www.thingiverse.com/thing:2427313 I remixed this to fit the HE3D K200 and K280 delta printers, and it may also work with other HE3D printers featuring the same extruder, as well as printers using a similar style of extruder. This mount features a NEMA-17 stepper mounting pattern, designed to be installed between the stepper motor and the extruder. You will likely need about 5mm longer M3 screws for your extruder when using this part, and you may need to adjust the alignment of the drive gear on the motor shaft as well. This design is intended specifically for a Makerbot-style mechanical endstop. Keep in mind that the design does not include screw holes for mounting the sensor inside the box, but my printer pictures show it mounted securely with screws. As Brian noted, there can be some variation in circuit board sizes, and mine had a loose fit that wouldn't stay properly aligned without screws. I simply drilled and added the screws, and now it works flawlessly.