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    Duet3 6CH + 3CH expansion board - Missing steps.

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    • dc42undefined
      dc42 administrators
      last edited by

      @Multisaft, it's likely that the changes already made in 3.3beta will fix the issue for you. The issue I am pinning down now occurs when all of XYE are on the same expansion board and there is a very high rate of very short moves sent to the board. Even if 3.3beta doesn't fix the issue, the improved diagnostics will reveal what is going on.

      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

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

        @dc42 ty, we will try it.

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        • dc42undefined
          dc42 administrators
          last edited by

          Good progress today. I had been assuming that the remaining problem seen by @evomotors was caused by the expansion board firmware being too slow, so over the past few days I have been making it more efficient. But additional diagnostics reveal that it's a problem with the way the main board firmware is scheduling CAN moves. With this particular file it's sending the expansion board some moves which are impossible to execute in time. Main board firmware is easier to debug than expansion board firmware, so tracking down why shouldn't take long.

          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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          • dc42undefined
            dc42 administrators
            last edited by

            I've located the problem and tested a provisional fix. It affects systems using CAN expansion boards that have DAA enabled.

            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

            evomotorsundefined 1 Reply Last reply Reply Quote 1
            • evomotorsundefined
              evomotors @dc42
              last edited by

              @dc42 said in Duet3 6CH + 3CH expansion board - Missing steps.:

              I've located the problem and tested a provisional fix. It affects systems using CAN expansion boards that have DAA enabled.

              When and how can I test?

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              • dc42undefined
                dc42 administrators
                last edited by dc42

                I've put new Duet 3 MB6HC firmware in https://www.dropbox.com/sh/wme9k0z86sytg33/AAAT6wrHp2eeJHK-dYoW1Um4a?dl=0. I expect it to work well with the EXP3HC firmware already there. I am testing with newer EXP3HC firmware, but it is still somewhat experimental.

                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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                • evomotorsundefined
                  evomotors @dc42
                  last edited by

                  @dc42 said in Duet3 6CH + 3CH expansion board - Missing steps.:

                  I've put new Duet 3 MB6HC firmware in https://www.dropbox.com/sh/wme9k0z86sytg33/AAAT6wrHp2eeJHK-dYoW1Um4a?dl=0. I expect it to work well with the EXP3HC firmware already there. I am testing with newer EXP3HC firmware, but it is still somewhat experimental.

                  I started the test print with the early 3.3beta that you are posted last week and DAA disabled. Then I will upgrade to the new 6CH and try again.

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                  • evomotorsundefined
                    evomotors
                    last edited by

                    @dc42 Is it possible that pressure advance has the same issue on expansion and tool boards?

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

                      @evomotors said in Duet3 6CH + 3CH expansion board - Missing steps.:

                      @dc42 Is it possible that pressure advance has the same issue on expansion and tool boards?

                      It's not pressure advance that triggers the problem I found today, it's DAA. Pressure advance will not trigger it. I ran the section of your test file that I have been using to replicate the problem with pressure advance enabled.

                      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

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

                        @dc42 said in Duet3 6CH + 3CH expansion board - Missing steps.:

                        @evomotors said in Duet3 6CH + 3CH expansion board - Missing steps.:

                        @dc42 Is it possible that pressure advance has the same issue on expansion and tool boards?

                        It's not pressure advance that triggers the problem I found today, it's DAA. Pressure advance will not trigger it. I ran the section of your test file that I have been using to replicate the problem with pressure advance enabled.

                        I can confirm that stuttering XY moves are gone with M593 disabled. No more layer shifts. I will still complete the print to see if issue with extrusions irregularity is gone as well.

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                        • dc42undefined
                          dc42 administrators
                          last edited by

                          @evomotors, thanks for your preliminary results.

                          I've now put the latest expansion and tool boards firmwares in that folder at https://www.dropbox.com/sh/wme9k0z86sytg33/AAAT6wrHp2eeJHK-dYoW1Um4a?dl=0. The older versions are in the "Previous-16-Jan-21" subfolder.

                          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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                          • T3P3Tonyundefined
                            T3P3Tony administrators
                            last edited by

                            @evomotors Testing with your config with DAA enabled is not showing any errors on the bench setup. did you get a chance to test it on the printer?

                            www.duet3d.com

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

                              @T3P3Tony said in Duet3 6CH + 3CH expansion board - Missing steps.:

                              @evomotors Testing with your config with DAA enabled is not showing any errors on the bench setup. did you get a chance to test it on the printer?

                              I didn't update to latest that @dc42 uploaded. But on pervious early 3.3 betta issue stops only when DAA is disabled. And yes I'm testing life on the printer.

                              I will upgrade to fresh build little late today.

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                              • evomotorsundefined
                                evomotors
                                last edited by

                                @dc42 @T3P3Tony The issue is fixed in the last 3.3 build! Tested with DAA enabled and print looks great (didn't look into the diagnostic messages) . Thank you!

                                Do you want me to mark this as answered?

                                deckingmanundefined 1 Reply Last reply Reply Quote 0
                                • deckingmanundefined
                                  deckingman @evomotors
                                  last edited by

                                  @evomotors said in Duet3 6CH + 3CH expansion board - Missing steps.:

                                  @dc42 @T3P3Tony The issue is fixed in the last 3.3 build! Tested with DAA enabled and print looks great (didn't look into the diagnostic messages) . Thank you!

                                  Do you want me to mark this as answered?

                                  I'm pleased for you that your issues have been resolved. For myself, I've given up and "mothballed" my printer.

                                  Maybe I'll pick it up again in 6 months or so but I've been battling firmware issues and coming up with "work arounds" since July 2019 and still have problems that need more work arounds. I've had enough...........

                                  Ian
                                  https://somei3deas.wordpress.com/
                                  https://www.youtube.com/@deckingman

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