Hall effect (magnetic) endstop holder

youmagine

On the i3 with a newer generation J-head hotend (very short), I realized that there's barely enough room for the endstop at the bottom of travel, so I created this holder to keep it off to the side just enough for the PCB to clear the motor mount. Fortunately, no fine adjustment is required since the electronics already have an adjustment built-in. The mounting lugs are intentionally offset to fit directly under the motor mount on the Prusa i3. If needed, you can easily adjust the SCAD to customize any desired offset. With its clean code, the parameters should work seamlessly. Instructions: For those using M3 hardware, the STL should be fine. I simply self-tapped the shorter screw into the plastic, while the other screw goes through to the nut for clamping pressure. To assemble it, follow the shown steps and fit the rod in place. You'll need to bend the sensor transistor so its face is facing where the magnet will be located. Move the sensor up to the motor mount, mark its location, and then determine which side of the magnet makes the LED light when brought near. Mark that side with a felt pen, glue the magnet in place, and make sure the marked side faces the sensor. Once the glue sets, you're ready to calibrate and start printing.