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    Duet Laser Monitor Troubleshooting - M591

    Filament Monitor
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    • scottypres
      scottypres last edited by

      Hi all,

      This is my first post, so hello!

      I just installed a duet laser filament monitor on my Railcore 2 and I'm having trouble with the calibration. I am using 1.75mm Carbon fiber Polycarbonate that has no gloss to it. The printed sensor enclosure parts are also made from this material. My min and max % values are approximately double what they should be.

      M591 D0 P5 C3 R140:260 E3.0 S1

      This is the widest min:max range I've used so far too complete prints without it giving an error that not enough movement is detected. Does anyone have any idea what the issue could be?

      20201008_211241.jpg

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      • T3P3Tony
        T3P3Tony administrators last edited by

        it looks like you have a range from 163-211%, have you tried using the calibration factor (L" to centre it around 100%:

        https://duet3d.dozuki.com/Wiki/Gcode#Section_M591_RepRapFirmware_Num_3

        I would try an "L" of 0.55 to start with

        www.duet3d.com

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        • scottypres
          scottypres last edited by

          Thank you!

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          • dc42
            dc42 administrators last edited by dc42

            If you can feed the filament past a toothed wheel before it reaches the filament monitor, that may put enough texture on it for the laser sensor to see it better.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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