Optical Filament Sensor - Hemera+MMU2 Compatible
Optical Filament Sensor - Hemera+MMU2 Compatible
3D
Published 2019-12-02T05:25:14+00:00
Simple Filament Presence Sensor
Uses an Optical Sensor to detect when filament is in the path.
Doesn't use a mechanical spring or endstop - infinite life.
Should be compatible with the MMU2 - Filament is fully constrained all the way through, and has a spot for a M10 fitting that will lock a bowden tube in place.
Hemera Compatible - Able to fit inside the envelope of the Hemera when mounted vertically. Bracket included for the OmniPack
BOM (Amazon Links are affiliate links - Will offer a complete kit if desired)
Printed:
1x Base
1x Lever
Purchased:
1x Optical Endstop
3x M3x10mm screws
1x 8mm Diameter Steel Ball
2x Magnets, 5mm OD, 2mm Thick
2x PTFE Tubes, 4mm OD (Optional)
1x M10 Fitting, 4mm Tube OD (Optional)
Ideal installation has the M10 Fitting Installed on the input side and the filament sensor is fixed relative to the extruder - See photo of installation on the OmniPack.
The Optical Sensor uses 2 M3 Screws - Ideally 10mm long, threaded into the plastic base, and then clamps onto a mounting brackets using the remaining thread as a mounting stud.
PLA at normal settings is fine. 20% infill, couple of perimeters.
Assembly:
1)Superglue magnets into their holes on the base+lever - Ensure that magnets oppose when their faces touch
2)Screw down Optical Sensor with 2x M3 screws
3)Insert Steel Ball, then attach lever with ball still in cavity with M3 Screw, not too tight
4)Test free travel+return of the lever, preferably with small part of filament
Optional:
5) Assemble PTFE+M10 Fitting to appropriate spots
| Date published | 02/12/2019 |
| Support Free | YES |