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    Laser Filament Monitor now available

    Filament Monitor
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    • T3P3Tony
      T3P3Tony administrators last edited by

      Finally!

      https://www.duet3d.com/laserfilamentmonitor

      1 Reply Last reply Reply Quote 2
      • elmoret
        elmoret last edited by

        Also available at Filastruder, for folks in the US.

        1 Reply Last reply Reply Quote 1
        • garyd9
          garyd9 last edited by

          Will the non-laser filament monitor ever make it to market? I thought I had read of some issues with the laser one not reliably detecting some filaments (or were those issues fixed?)

          T3P3Tony 1 Reply Last reply Reply Quote 0
          • T3P3Tony
            T3P3Tony administrators @garyd9 last edited by

            @garyd9 The Magnetic monitor will be released - working through a scalable solution for the mechanical parts of the magnetic monitor.

            The laser sensor works with variable accuracy depending on the filament. Have a look at this long thread:
            https://forum.duet3d.com/topic/6092/laser-filament-monitor-test-results/137

            The tests do show that we get good enough detection across all filaments are good enough to handle a jam/tangle/runout with a relatively small gap. If the gap is acceptable to resume the print after sorting the problem depends on the part being printed and the filament type.

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            • madhunm
              madhunm last edited by

              @t3p3tony said in Laser Filament Monitor now available:

              Finally!
              https://www.duet3d.com/laserfilamentmonitor

              Where are the HW and SW sources hosted?

              Thanks!

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

                @madhunm Thanks for the prompt, its here on github:

                https://github.com/T3P3/FilamentMonitors/tree/master/Filament_Monitor_Laser_v1.7

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

                  @t3p3tony Much appreciated!

                  Edit: Where is the firmware hosted? Thanks!

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                  • dc42
                    dc42 administrators last edited by

                    It's at https://github.com/dc42/LaserFilamentMonitor.

                    madhunm 1 Reply Last reply Reply Quote 0
                    • madhunm
                      madhunm @dc42 last edited by

                      @dc42 Thanks!

                      1 Reply Last reply Reply Quote 0
                      • madhunm
                        madhunm last edited by

                        @dc42 @T3P3Tony

                        From what I can understand after reading the code and hardware design files, the MCU on the filament sensor is using a one wire serial protocol to transmit the filament movement details... Please correct me if I am wrong.

                        If the above is correct, then there is no need for a break out of the other pins. Right?

                        The reason I am asking this is because, I want to adapt your design to fit onto the PR PCB size (22mm long by 10mm high)

                        I have moved over from the PR miniRambo / Einsy over to the Duet WiFi successfully and this is the last piece of the puzzle.

                        Thanks!

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

                          @madhunm The filament monitors do communicate with the Duet over a single wire serial protocol, note thats is not "1-Wire" as in the Dallas serial conductor protocol.

                          Details of that are here:

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

                          the Prusa design uses the i2c bus to communicate with the filament monitor directly which is not great as thart is not designed for longer distance wires, hence we have a attiny in between and a relatively robust and simple async protocol to pass the low data rate information from the monitor.

                          Are you familiar with KiCAD? I did the existing design in that and would be happy to help you with the redesign. That said, given the availability of PAT9125 sensors it may be easier to redesign the printed parts to use out sensor, rather than redesigning the sensor to fit the printed parts!

                          1 Reply Last reply Reply Quote 0
                          • madhunm
                            madhunm last edited by

                            @T3P3Tony

                            Thanks for confirming my understanding.

                            I understand what you're saying about the availability of the sensors; do you think buying a PR board and desoldering the sensor is doable?

                            Anyway, the reason I'm going for this is because; based on my experience, the PR print head is one of the most compact.

                            Thanks again!

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

                              @madhunm easier for us to send you a couple. remind me once you have a design.

                              1 Reply Last reply Reply Quote 0
                              • madhunm
                                madhunm last edited by

                                @T3P3Tony thanks a ton! Will do!

                                1 Reply Last reply Reply Quote 0
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