IR filament sensor always things filament loaded
My Mk3 was not autoloading filament anymore. I tracked down the problem that the IR sensor is always sensing filament, no matter if it is loaded or not. (in LCD Menu -> Support -> Sensor info). I took my machine apart following the instructions on: IR sensor troubleshooting. When the extruder motor is removed, the sensor will finally read "0" (unloaded), but as soon as I put the motor back in place the sensor changes to "1" (filament loaded). I do not see any debris in the sensor area. Any ideas on how to fix this?
RE: IR filament sensor always things filament loaded
Yea its a known design flaw. Check out the thread I created on it a few days ago: LINK
If at first you don't succeed, redefine success!
RE: IR filament sensor always things filament loaded
I went through the troubleshooting guide completely and accidentally fixed it by loosening the sensor pcb screw. Was super excited to post the solution here and then I noticed the related topic below with this exact fix... 😊
This related topic [FIX] Filament Autoload not working was the solution for me.
RE: IR filament sensor always things filament loaded
I just built a new i3 Mk3S and everything worked perfectly except the filament sensor was always on. I saw this post and loosened the screw holding the IR sensor down 1 turn. Now the filament sensor works! Very quick fix as you just have to take the top plate off to access that screw.