Filament Runout Sensor for Ender 3 / Pro / V2 - Stock Z Endstop

thingiverse

If you have replaced your z-endstop with a BLtouch or other ABL sensor, you can make yourself an accurate filament sensor! This is a remix of two different filament sensors to make installing the sensor on your Ender 3 / Ender 3 Pro / Ender 3 V2 very easy. Instructions: 1. Use the stock screws that come with the stock z-endstop to install the switch to this mount 2. Put the switch in the hole and ensure that when you press it down, it pushes down on the endstop switch. - You can optionally put a bit of ptfe tubing in the inlet / outlet of the sensor to help guide the filament 3. Screw the lid on the sensor with two M3 screws. Check that filament can go through the sensor smoothly (don't forget to press down on the switch) 4. Modify the stock Z endstop wire to be longer and plug it into the sensor and the mainboard. 4. Mount the sensor next to the extruder by first unscrewing the outer wheel a bit and sliding the mount in