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    25.95mm/rev, min -33% max 162% over 9615.6mm

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    Filament Monitor
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    • nurooundefined
      nuroo
      last edited by nuroo

      @T3P3Tony im not sure I want to move the sensor above extruder. Certainly not ideal for a corexy setup. Already moving the mass of extruder, stepper motor, hotend etc around..... I didnt realize this sensor needed to be close to the extruder when I bought it. Is that requirement listed on product page?
      Can we not account for different setups in firmware with options for a setup like this.

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      • samlogan87undefined
        samlogan87
        last edited by

        @nuroo I will be in the same boat. Mine will have to go at the end of 650mm of tube. I am running a flex3drive and mounting the sensor on the carriage with the drive tube in the way will be impossible

        Regards
        Sam

        Custom Core-XY

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        • dc42undefined
          dc42 administrators
          last edited by

          The filament monitor must be right next to the extruder drive input or output. Any other arrangement allows the filament to flex too much in the tubing between the two, in particular when the direction of motion reverses.

          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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          • nurooundefined
            nuroo
            last edited by

            Well ok. I need to make an extension and try again. I wish this requirement was noted to customer on product page or wiki. I'll report back.

            T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
            • nurooundefined
              nuroo
              last edited by nuroo

              New Setup
              0_1567380530674_20190901_185722.jpg

              === Filament sensors ===
              Extruder 0: pos 188.09, ok, measured sens 24.89mm/rev min 95% max 103% over 1015.3mm, errs: frame 0 parity 0 ovrun 0 pol 1 ovdue 0

              M591 D0
              Duet3D rotating magnet filament monitor v2 on input 3, disabled, sensitivity 24.80mm/rev, allow 70% to 130%, check every 3.0mm, current pos 44.6, measured sensitivity 24.90mm/rev, min 95% max 103% over 1021.3mm

              much better numbers, but will I get false positives when I enable sensor?
              M591 D0 P3 C3 S1 R100:110 L24.90 E3.0 ;

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              • nurooundefined
                nuroo
                last edited by

                2 successful prints, no false positives with new setup.

                M591 D0 P3 C3 S1 R90:110 L24.96 E3.0 ;

                now to try a real filament outage

                themelleundefined 1 Reply Last reply Reply Quote 0
                • themelleundefined
                  themelle @nuroo
                  last edited by

                  @nuroo Congratulations on getting it to work as intended!

                  Now I'm left alone again with my "frame errors"/"sensor has stopped working" problem.
                  May try to send it back to Filastruder as I am out of ideas now 😞

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                  • T3P3Tonyundefined
                    T3P3Tony administrators @nuroo
                    last edited by

                    @nuroo said in 25.95mm/rev, min -33% max 162% over 9615.6mm:

                    Well ok. I need to make an extension and try again. I wish this requirement was noted to customer on product page or wiki. I'll report back.

                    I am glad you got it working and thanks for the feedback, i have updated the installation section of the documentation to note the requirement: https://duet3d.dozuki.com/Wiki/Duet3dFilamentMonitor_RotatingMagnetVersion#Section_Installation

                    @themelle i think asking filastruder to swap it will be a good test to see if this is a board that passed testing but is marginal in your setup.

                    www.duet3d.com

                    themelleundefined 1 Reply Last reply Reply Quote 0
                    • themelleundefined
                      themelle @T3P3Tony
                      last edited by

                      @t3p3tony Thanks for your honest feedback.
                      May I direct Filastruder support to your post confirming a warranty swap?

                      T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                      • T3P3Tonyundefined
                        T3P3Tony administrators @themelle
                        last edited by

                        @themelle yes

                        www.duet3d.com

                        themelleundefined 1 Reply Last reply Reply Quote 0
                        • themelleundefined
                          themelle @T3P3Tony
                          last edited by

                          @t3p3tony Thank you!

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                          • nurooundefined
                            nuroo
                            last edited by

                            Well I thought I was good to go with correct setup.
                            2 small 1 hour long prints no false positives. 11hour print - false trigger to little movement, about 5 hours in. Had to disable sensor so I didn't have to sit there having to keep resuming print.

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                            • nurooundefined
                              nuroo
                              last edited by

                              Are there any other troubleshooting measures I could try?

                              themelleundefined 1 Reply Last reply Reply Quote 0
                              • themelleundefined
                                themelle @nuroo
                                last edited by

                                @nuroo I got my sensor swapped as it seemed to be faulty. Since then I have been getting much better values - but I am running 70-130% allowed movement to compensate for spike values.
                                Maybe you also should loosen the grip a little bit 🙂

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                                • nurooundefined
                                  nuroo
                                  last edited by

                                  @themelle good to hear they swapped yours out. Figured I'd give the sensor another look.

                                  I love that you can gather data while not actually having the printer stop.
                                  Im current running:
                                  M591 D0 P3 C3 S0 R85:115 L25.12 E3.0 (which worked on shorter prints)

                                  S0 - disable filament monitoring.

                                  So with my current longer print I did:
                                  M591 D0
                                  Duet3D rotating magnet filament monitor v2 on input 3, disabled, sensitivity 25.12mm/rev, allow 85% to 115%, check every 3.0mm, current pos 210.9, measured sensitivity 24.33mm/rev, min 1% max 110% over 6134.2mm

                                  The high side range seems ok. Max I got is 110% but room for error still with 115%.
                                  That min 1% is strange?? It would have surely triggered a pause had filament monitoring been enabled. But I have moved the sensor location as suggested. It reminds me of the min -33% I got starting this thread.

                                  How do I over margin min 1% or min -33% so that these results are within good range?
                                  For min 1% do i enter 0%? ie (M591 D0 P3 C3 S1 R0:115)??
                                  For min -33% do i enter -40%? (M591 D0 P3 C3 S1 R-40:115)??
                                  Can your algorithm handle such low values?
                                  Do these low values still point to an issue with my setup?

                                  themelleundefined 1 Reply Last reply Reply Quote 0
                                  • themelleundefined
                                    themelle @nuroo
                                    last edited by

                                    @nuroo Please look out for frame errors reported by M122.
                                    They went away with my replaced monitor, and so did the ultra-low min-values it got before.

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