SOLVED Duet laser filament sensor reporting min 0% with fast extrusion
Cheers dear manufacturers,
I have encountered a problem with my filament laser sensor. Calibration runs fine, as does the first layer printing. However, as soon as it reaches standard printing speeds, which is around 140g/h, it starts to report 0% minimum speed and pauses the print.
Is there any config or way to overclock it of sorts to make it capable of reading filament passing through more rapidly ?
Here is a read after some printing time:
Duet3D laser filament monitor v2 on input 3, disabled, allow 40% to 115%, check every 10.0mm, version 2, quality 223, brightness 70, shutter 121, measured min 0% avg 58% max 99% over 36647.7mm
The sensor housing was painted black with acryl spray, the filament is bronzegold colored PLA.
There is indeed a maximum speed that the laser filament monitor can track, but I would not expect it to be a problem during normal extrusion. It may well be a problem while loading or unloading filament.
One option may be to convert the laser filament monitor from directly sensing the filament to sensing a secondary wheel. That way the texture/color/speed of the filament itself is no longer an issue.
Something like this: https://www.thingiverse.com/thing:4796741
peed that th
Hi, thanks for the answer. I looked somewhat closer and realized the filament is full of scales from the production line. They blind the sensor as they accumulate over time.
That's a good observation. Thanks. That will definitely be something to check for others in the future. Glad you got it sorted out.