New Filament Motion Sensor.
Currently setup and working on my Voron 2 using Klipper. Straight forward little optical encoder to detect filament motion or lack thereof and runout. Tried to keep it as small as possible compared to others out there.
Please refer to Klipper documentation for explaination of filament_sensor... https://www.klipper3d.org/Config_Reference.html#filament-sensors
Add to your printer.cfg (Klipper firmware) and adjust settings to suit your requirements... [filament_motion_sensor my_sensor] detection_length: 5.0 extruder: extruder switch_pin: PG13 #adjust to suit mcu board being used. pause_on_runout: True event_delay: 5.0 pause_delay: 1.0
BOM 2x M2.5x10mm SH screws 4x M3x25mm SHCS bolts 4x M3x10 or 12mm SHCS bolts (for mounting) 2x M3 hammer T nuts or spring T nuts (for mounting) 6x M3x5x4mmØ heatset inserts (2x for mounting) 1x 30x5mmØ axel shaft 2x MR125ZZ 5x12x4mm ball bearings 1x 11x11x5mmID Brass extrusion tooth gear wheel 1x Endstop Optical Light Control Limit Switch -
Parts printed in PLA+ or ABS+ or whatever...4 walls, 4 surfaces, 30% infill, layer height of 0.2mm.