Ender 3 Direct Drive Extruder + Filament Runout Sensor + Dust Filter

cults3d

Added a Dust Filter and a Filament Runout sensor to the direct drive mod. I installed a BLTouch and I used the Z Limit Switch as a filament Rrunout sensor. I bent the tip o the limit switch because it must accept filament to be fed in both directions... If a filament runout occurs the extruder will retract filament back to the limit switch... The stock Ender 3 Limit Switch doesn't have a LED so I grabbed one that I had laying around and soldered it to the limit switch (along with its resistor). The screws are nylon M3 with nylon nuts... I bought a bunch of them 15mm to 20mm then just cut them to the needed length. 11/01/2019 - Slightly modified the cover...