Indirect Duet Laser filament monitor by KipK

Last crawled date: 2 years, 10 months ago

This is my version of indirect laser filament monitoring, using Duet Laser filament sensor.
I was inspired by this one: https://www.thingiverse.com/thing:4341389
But wanted to use a bondtech gear and different bearings.
Also the U shape bearing is now free to move in the latch, and tensionning can be adjusted using thumb screw..
Reprap 3.x firmware config:
M591 D0 P5 C"e0_stop" R75:125 E3.0 S1 A1 L0.406
=> measured min 85% avg 98% max 115% over 47233.3mm
Updates:
14/06/21:
. updated Case_Bottom and Latch. Now use a collar clip on the input side.
12/06/21:
. fix laser sensor in the wrong direction
. added a hole to insert transparent filament part for the led.
. added a new printed part on the 5mm shaft for the laser reading.
Parts needed:
4 x Socket Cap Headscrew M3x20mm
2 x Socket Cap Headscrew M3x6mm
6 x M3 nuts
1 x Socket Cap Headscrew M4x8 mm
1 x bondtech drive gear for 1.75mm filament 5mm shaft
1 x 3mm x 19-20mm shaft ( provided with bondtech gears usually )
1 x 5mm x 27mm shaft ( Carbon rod, or painted aluminium rod )
1 x M3 thumbscrew , Spring and nylon washer ( https://www.3djake.com/bondtech/thumbscrew )
1 x M3x4mm heat insert
1 x U604 4x12x4mm U shape bearings
2 x MR115ZZ 5x11x4mm bearings
1 Duet Laser filament monitor
1 x M6 Press Fit PTFE coupler
1 x PTFE collet clip coupler
some PTFE tubes
a piece of clear transparent 1.75mm filament ( for the led )