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    Laser Filament Monitor - test results

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    Filament Monitor
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    • Qdeathstarundefined
      Qdeathstar
      last edited by

      White ABS - Matterhackers - Benchy Test
      Calibrated Steps/mm 424

      M591 D0

      Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position 2.5, brightness 88, shutter 7, measured minimum 43%, average 71%, maximum 87% over 3970.6mm

      T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
      • brunofportoundefined
        brunofporto
        last edited by brunofporto

        If you put the sensor AFTER the extruder, and aligned with the markings made by the extrusion gear, the texture will allow better readings for any type of filament. These optical flow mouse sensors work better with textures than with bright surfaces after all.

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

          @qdeathstar youch serious under reading on ABS!

          www.duet3d.com

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          • kraegarundefined
            kraegar
            last edited by

            I'm kind of surprised. I printed my housing out of Carbon Fiber PETG. Had someone ask for some printer parts, so I'm printing in the same Carbon Fiber PETG, and it's very very close.

            Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -1.9, brightness 77, shutter 17, measured minimum 91%, average 97%, maximum 112% over 9128.9mm

            Co-Creator of the RailcoreII CoreXY printer
            https://www.thingiverse.com/thing:2407174

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

              @kraegar thats much better results... very workable.

              www.duet3d.com

              1 Reply Last reply Reply Quote 0
              • Qdeathstarundefined
                Qdeathstar
                last edited by Qdeathstar

                I am under reading again using transparent-green ABS

                Hatchbox Transparent Green - Benchy Test

                Calibrated Steps/mm 424
                Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position 4.6, brightness 83, shutter 17, measured minimum 45%, average 69%, maximum 89% over 3968.1mm

                Matter Hackers Black ABS - Partial Benchy Test

                Steps/mm 424
                M591 D0
                Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -8.1, brightness 89, shutter 17, measured minimum 93%, average 96%, maximum 99% over 366.2mm

                Im a little lower than my previous Black ABS test, but the steps/mm is also lower for this test (so it makes sense).. But I'm not way down near my white ABS or Transparent Green ABS....

                Materhackers Lime Green (Opaque Neon) ABS Filament - Benchy Test
                Calibrated Steps/mm 424

                M591 D0
                Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -3.2, brightness 94, shutter 13, measured minimum 75%, average 91%, maximum 98% over 3974.8mm

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

                  @qdeathstar looks like color of pigment is playing more of a part than the filament material for those ABS's

                  @DC42 It would be great to have the ability to set the 100% amount in much the same manner as the mm/revolution of the magnet can be set in that version.

                  www.duet3d.com

                  dc42undefined 1 Reply Last reply Reply Quote 0
                  • dc42undefined
                    dc42 administrators @T3P3Tony
                    last edited by

                    @t3p3tony said in Laser Filament Monitor - test results:

                    @DC42 It would be great to have the ability to set the 100% amount in much the same manner as the mm/revolution of the magnet can be set in that version.

                    I think it would be confusing to change the 100% amount. Also, if the sensor under-reads the average amount for a particular filament, you are also likely to get much bigger variation for that filament. For example, the post by @Qdeathstar gives 93% to 99% for one filament, and 45% to 89% for another. So simply adjusting the 100% amount wouldn't be sufficient.

                    Instead I think you should use the new M703 command in conjunction with the filament management facility to set up appropriate R limits in the M591 command for the filament in use.

                    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

                    wilrikerundefined T3P3Tonyundefined 2 Replies Last reply Reply Quote 1
                    • wilrikerundefined
                      wilriker @dc42
                      last edited by

                      @dc42 said in Laser Filament Monitor - test results:

                      Instead I think you should use the new M703 command in conjunction with the filament management facility to set up appropriate R limits in the M591 command for the filament in use.

                      I had the same thought.

                      Manuel
                      Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                      with probably always latest firmware/DWC (incl. betas or self-compiled)
                      My Tool Collection

                      1 Reply Last reply Reply Quote 0
                      • T3P3Tonyundefined
                        T3P3Tony administrators @dc42
                        last edited by

                        @dc42 said in Laser Filament Monitor - test results:

                        @t3p3tony said in Laser Filament Monitor - test results:

                        @DC42 It would be great to have the ability to set the 100% amount in much the same manner as the mm/revolution of the magnet can be set in that version.

                        I think it would be confusing to change the 100% amount. Also, if the sensor under-reads the average amount for a particular filament, you are also likely to get much bigger variation for that filament. For example, the post by @Qdeathstar gives 93% to 99% for one filament, and 45% to 89% for another. So simply adjusting the 100% amount wouldn't be sufficient.

                        Instead I think you should use the new M703 command in conjunction with the filament management facility to set up appropriate R limits in the M591 command for the filament in use.

                        Hi David, sure can set the limits to whatever, I was just thinking that it would be nice to "zero" the filament on the average for that type. Actually I might have zeroed it on the low reading as I don't care if it reads an "over extrusion" since the failure modes we are generally interested in lead to under, not over extrusion.

                        www.duet3d.com

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                        • wilrikerundefined
                          wilriker
                          last edited by

                          😠 Something seems to not want me to use this sensor. Second attempt to print the housing failed also. This time my fan shroud was somehow coming loose (never ever had this before) and knocked the print of the bed. 🤦

                          Manuel
                          Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                          with probably always latest firmware/DWC (incl. betas or self-compiled)
                          My Tool Collection

                          1 Reply Last reply Reply Quote 0
                          • Qdeathstarundefined
                            Qdeathstar
                            last edited by

                            Ok, last ABS test

                            Matterhackers Light - Blue ABS filament - Benchy Test

                            Calculated Steps/mm 424

                            M591 D0
                            Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -2.4, brightness 92, shutter 11, measured minimum 0%, average 93%, maximum 102% over 3975.4mm

                            wilrikerundefined T3P3Tonyundefined 2 Replies Last reply Reply Quote 0
                            • wilrikerundefined
                              wilriker @Qdeathstar
                              last edited by

                              @qdeathstar You seem to like ABS. 😉

                              Manuel
                              Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                              with probably always latest firmware/DWC (incl. betas or self-compiled)
                              My Tool Collection

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

                                @qdeathstar said in Laser Filament Monitor - test results:

                                Ok, last ABS test

                                Matterhackers Light - Blue ABS filament - Benchy Test

                                Calculated Steps/mm 424

                                M591 D0
                                Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -2.4, brightness 92, shutter 11, measured minimum 0%, average 93%, maximum 102% over 3975.4mm

                                minimum 0?

                                do you mind checking that again?

                                www.duet3d.com

                                Qdeathstarundefined 1 Reply Last reply Reply Quote 0
                                • Qdeathstarundefined
                                  Qdeathstar
                                  last edited by

                                  Yes, i can rerun that test later today. I think that might have been a real slippage, as this blue filament feels pretty slippery. I also noticed while i was loading it it didn't move the first time i pressed "extrude" but i chalked it up to me accidentally pressing the "retract" button instead. Its about 2 years old....

                                  1 Reply Last reply Reply Quote 0
                                  • kraegarundefined
                                    kraegar
                                    last edited by

                                    I like spreadsheets, so I created one for tracking my results. Any other data needed?

                                    https://docs.google.com/spreadsheets/d/1a5suKtijUsatl3DhUFiox_rfW39qo9kHSlihYHaAcxo/edit?usp=sharing

                                    Co-Creator of the RailcoreII CoreXY printer
                                    https://www.thingiverse.com/thing:2407174

                                    tinkerzundefined 1 Reply Last reply Reply Quote 0
                                    • tinkerzundefined
                                      tinkerz @kraegar
                                      last edited by

                                      @kraegar Thank you! Not sure why I didn't think of putting it up on Google docs, here I have all my results in good 'ol Notepad++. Thank you again. This makes it easy to keep updated without worrying about saving, losing or sharing.

                                      Tinkerz

                                      kraegarundefined 1 Reply Last reply Reply Quote 0
                                      • kraegarundefined
                                        kraegar @tinkerz
                                        last edited by

                                        @tinkerz No problem - I have a ridiculous number of data tracking spreadsheets for 3d printing. I can't do anything without tracking it, lol.

                                        Co-Creator of the RailcoreII CoreXY printer
                                        https://www.thingiverse.com/thing:2407174

                                        1 Reply Last reply Reply Quote 0
                                        • Qdeathstarundefined
                                          Qdeathstar @T3P3Tony
                                          last edited by

                                          @t3p3tony said in Laser Filament Monitor - test results:

                                          @qdeathstar said in Laser Filament Monitor - test results:

                                          Ok, last ABS test

                                          Matterhackers Light - Blue ABS filament - Benchy Test

                                          Calculated Steps/mm 424

                                          M591 D0
                                          Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -2.4, brightness 92, shutter 11, measured minimum 0%, average 93%, maximum 102% over 3975.4mm

                                          minimum 0?

                                          do you mind checking that again?

                                          M591 D0
                                          Duet3D laser filament monitor on endstop input 3, disabled, allowed movement 40% to 120%, check every 3.0mm, current position -3.0, brightness 91, shutter 11, measured minimum 88%, average 95%, maximum 102% over 3973.3mm

                                          Better result this time.

                                          1 Reply Last reply Reply Quote 0
                                          • wilrikerundefined
                                            wilriker
                                            last edited by

                                            Finally managed to print the sensor housing. It seems that the lazy-me (why should I disassemble my X axis before lubricating it?) got some PTFE on my build plate - perfect for first-layer adhesion. 🤦 Luckily nothing that gluestick won't overcome. 😂

                                            So, assembly and mounting of the sensor probably tonight. 🙂

                                            Manuel
                                            Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                                            with probably always latest firmware/DWC (incl. betas or self-compiled)
                                            My Tool Collection

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