Ender 3 Hall-effect Endstops

thingiverse

Update 26.07.2020 Added versions without mounting holes. ================= Hall-effect endstops for Creality Ender 3. Used a groupmate's work in the telegram chat and redesigned it to fit my needs. With these endstops, I eliminated loud mechanical endstop bumps during homing. Endstops use tiny, affordable A3144 hall effect sensors. A 10 kΩ pull-up resistor is soldered to the signal and 5v pins. Then the pins are soldered to an xh2.54 3Pin connector and placed inside a printed case. The top is covered with epoxy glue for strength and to prevent short circuits. Small neodymium magnets are glued to the X and Y carriages opposite the sensors. You will need +5v from the mainboard, of course. At first, I wanted to secure them with a threaded insert and a countersunk bolt and designed a hole for them. However, in the end, I gave up on that because the endstop goes into place with little effort and holds well in place. Parts used: Hall sensor: https://aliexpress.com/item/32823025060.html 10K resistor: https://aliexpress.com/item/32869854333.html xh2.54 connector: https://aliexpress.com/item/32760531736.html Neodymium magnet: https://aliexpress.com/item/32953346950.html Marlin changes: In Configuration.h #define X_MIN_ENDSTOP_INVERTING true #define Y_MIN_ENDSTOP_INVERTING true In Configuration_adv.h #define X_HOME_BUMP_MM 20 #define Y_HOME_BUMP_MM 20