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    Laser sensor calibration info

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    Filament Monitor
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    • Ladusseundefined
      Ladusse
      last edited by

      Hi I just installed my laser sensor and I don't now what I should for the ''R" value. here is my result.

      180ce13d-296b-4e21-a3a7-b230931aec32-image.png

      Thanks

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Have you seen?

        https://duet3d.dozuki.com/Wiki/Duet3dFilamentMonitor_LaserVersion

        Z-Bot CoreXY Build | Thingiverse Profile

        Ladusseundefined 1 Reply Last reply Reply Quote 0
        • Ladusseundefined
          Ladusse @Phaedrux
          last edited by

          @Phaedrux yes I seen it I don't understand the R value the minimum and maximum permitted measured movement as a percentage of commanded movement. As the example calibration reports 43% to 115% then you might choose R30:130.

          Why it choose R30:130 with the reports of 43% to 115%?

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          • alankilianundefined
            alankilian
            last edited by

            The R value says:

            STOP the print if the measured filament amount is less than 30% of the commanded filament amount.

            STOP the print if the measured filament amount is more than 130% of the commanded filament amount.

            Since the filament sensor is not completely accurate, you need to set a range of acceptable values or your print will stop on almost every single extrusion.

            What I did is to set the range large like R10:500 then I did a print and looked at the result values and saw a range of something like 85% to 115% so I set my range to R50:150.

            SeemeCNC Rostock Max V3 converted to V3.2 with a Duet2 Ethernet Firmware 3.2 and SE300

            Ladusseundefined 1 Reply Last reply Reply Quote 1
            • Ladusseundefined
              Ladusse @alankilian
              last edited by

              @alankilian thanks for the explication it's now more clear.

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