Laser Filament Monitor v2 - strange readings

Matt77

Hi,

got mi Laser filament monitor and trying to calibrate it.

the output from M591 D0 is the below.
the min, avg and max values are extremely strange.
any idea why?

running the Duet Wifi with FW 2.05

this is what i have in my config.g

M591 D0 P5 C3 R40:120 E3.0 S0

Duet3D laser filament monitor v2 on input 3, disabled, allow 40% to 120%, check every 3.0mm, version 2, quality 222, brightness 39, shutter 132, measured min -161% avg -132% max 2509% over 804.7mm

thanks in advance for all replies
Matt

droftarts

@Matt77 What filament are you using? See https://duet3d.dozuki.com/Wiki/Duet3dFilamentMonitor_LaserVersion#Section_Note_on_filament_compatibility

Ian

Matt77

@droftarts Hi,

i tried a housing for the sensor with indirect sensing of the movement with bearings.
therefore i would assume that all filaments should work more or less the same.

is there currently any recommended/preferred housing for the laser filament monitor?

Matt

Matt77

i changed the housing and getting now the below figures.

M591 D0
Duet3D laser filament monitor v2 on input 3, disabled, allow 40% to 120%, check every 3.0mm, version 2, quality 223, brightness 29, shutter 120, measured min 0% avg 120% max 166% over 702.0mm

Is a min of 0% mages any sense here?

Matt