Negative values for Laser Filament Monitor

[ThatNinthGuy]

Hi,

I installed a laser sensor a while back and it's been great until a few days ago when it started to report 0% across the board. Now it's even reporting negative values... I found some old forum posts from back when it came out and negative values usually meant that it was mounted incorrectly, but that's not the case here

M591 D0 gives me this:
Duet3D laser filament monitor v2 on input 4, disabled, allow 10% to 150%, check every 10.0mm, version 2, quality 223, brightness 31, shutter 127, measured min -90% avg 55% max 117% over 252481.9mm

I know my tolerances are high but that's just a lack of not tuning settings after fixing high friction in the filament path and it's been working fine.

Could it be a broken sensor or just a wire?

Ciao for now

[T3P3Tony]

@thatninthguy did you do a firmware upgrade or change anything else?