Filament Runout Sensor and Guide (Ender 3 V2)

thingiverse

You will need: (See in picture) - 1x Microswitch - 1x Piece of PTFE tube (3~4cm) - 1x Double wire - 1x 3pin male connector Optional: You may want to pause the print to put the PTFE tube while it is printing (see inpictures). * If you want to print with cap, use the files Ender_3_V2_-_Runout_Sensor_Base.stl and Ender_3_V2_-_Runout_Sensor_Cap.stl, if not, use only the file Ender_3_V2_-_Runout_Sensor.stl. * If you use stock firmware, probable you will need to update it (I'm not sure if it really need), I recommend to compile [Marlin](https://marlinfw.org/meta/download) by yourself or download a pre-configured one, like [mriscoc](https://github.com/mriscoc/Ender3V2S1) or [Jyers](https://github.com/Jyers/Marlin). After this, you will be able to active Runout Sensor. * To better functionality, cut the PTFE tube like showed in the picture. * Wiring: The color doesn't matter, but check if the connector wire and switch wire position are ok.