Early laser filament monitor

fma

Hi!

I still have one of the early laser filament monitors, using direct reading, with a PCB rev. 1.2, and I would like to know if it is still supported on a Duet3 Mini 5+?

I just want to use it as a runout sensor, and maybe as jammed sensor if it works reliably... What is the basic config (M591) for such use case?

Thanks,

droftarts

@fma yes, still supported, see https://docs.duet3d.com/en/User_manual/Connecting_hardware/Sensors_filament#legacy-products

I think there is a community developed version that reads a hobbed insert that is turned by the filament, as the laser doesn’t work well on all filament types and colours. Can’t find it on my phone! Perhaps someone has a link?

Ian

fma

I have a v1.2, not a v1.7; is it ok?

Does it work with 3.3V, like recent sensors? I don't have any free input with 5V power supply.

The modified version could be interesting...

droftarts

@fma I didn’t know we made a 1.2; only v1.7 and v2.0 are documented: https://docs.duet3d.com/en/Duet3D_hardware/Accessories/Laser_Filament_Monitor

They both run on 3.3V, I don’t know about the one you have.

Here’s the indirect reading version: https://forum.duet3d.com/topic/10042/indirect-bearing-laser-filament-monitor-concept

Ian

fma

@droftarts if you look at the Laser filament monitor doc page, the first picture shows a v1.2 PCB

Thanks for the infos and the link to the indirect mod!