Filament runout sensor problem
I have an Ender3 V2 printer with 4.2.2 MB. I also attached a BLTouch and filament runout sensor. I use Marlin daily firmware, BLTouch fine now but filament runout sensor works reverse. I mean, it works when no filament inside but stops when filament loaded. It's a simple chinese sensor, probably there is a micro switch inside. Logically there must be a C, NormalOpen and NormalClose pins and if I replace NO and NC pins, it should work fine... But logic did not work. After I replaced pins, blue led always lit (with & without filament) and extruder does not feed filament.
I added Cura's start G-Code M412 S1; then M412 D35. When sensor loaded with filament blue led lit, printer stops and unload filament all the way out ignoring M412 D35 code.
I'm happy with latest daily firmware, BLTouch checks the bed in 25 points, I see X, Y, Z positions on screen etc. May I request a firmware which make my filament runout sensor work properly.