Filament Motion Sensor Encoder v1

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 -

https://www.aliexpress.com/item/4000265560120.html?spm=a2g0o.productlist.0.0.2b936e1bkurNn7&algo_pvid=84448b66-195f-4a3d-8b14-5316b0ac768c&algo_exp_id=84448b66-195f-4a3d-8b14-5316b0ac768c-2&pdp_ext_f=%7B%22sku_id%22%3A%2212000022932967177%22%7D&pdp_npi=2%40dis%21NZD%211.46%211.24%21%21%212.99%21%21%402101e9d516629379762115718e8cca%2112000022932967177%21sea&curPageLogUid=7SESQxzhcukb

Parts printed in PLA+ or ABS+ or whatever...4 walls, 4 surfaces, 30% infill, layer height of 0.2mm.

Works for me.

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