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    Hiccups on 3HC expansion board

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    Duet Hardware and wiring
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    • dc42undefined
      dc42 administrators @dc42
      last edited by dc42

      @dc42 said in Hiccups on 3HC expansion board:

      I think that's an issue with the expansion board firmware. I have an update planned. I'll try to get a beta available later today.

      I meant the hiccup issue, not the filament retraction.

      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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      • jay_s_ukundefined
        jay_s_uk @deckingman
        last edited by

        @deckingman
        I've check the gcode file and I'm definitely in relative mode.
        If extrude steps are being missed but retraction steps aren't, that would manifest itself as eventually the filament being fully retracted.
        I will report back as soon as dc42 releases a beta for testing

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

          @jay_s_uk Yes, but is your firmware configured to expect relative moves? Do you have an M83 in your configuration file. If so, is there an M82 anywhere else that could override it? i.e. in your start gcode or config-override.g.

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

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          • jay_s_ukundefined
            jay_s_uk
            last edited by

            I have M83 in my config, an M82 at the start of my gcode and then a switch straight back to M83.
            Its setup the same as my other machines.

            Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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            • deckingmanundefined
              deckingman
              last edited by

              OK, so I just tried a few G10/G11 cycles to exercise my extruders. To be clear, the reason why I did that is that I can't run a print right now so have no other way of exercising the extruders. Also firmware retraction happens at a much faster speed than "normal" extruder moves and exercises all 6 extruders simultaneously.

              After about 20 cycles, I ran M122 B1 and the result shows zero hiccups. My steps per mm are around 410, micro-stepping is 16X. Firmware retraction is set to use a feedrate of 3600.

              So I don't think this is a firmware issue. Also, I did manage to get a print out of my machine yesterday using 3 extruders in mixing mode which wasn't half bad.

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

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              • jay_s_ukundefined
                jay_s_uk
                last edited by

                @dc42 any update on a beta build to sort the hiccups out? I'm happy to carry out testing etc

                Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

                  It's built, but I've not had a chance to test it yet.

                  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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                  • deckingmanundefined
                    deckingman @jay_s_uk
                    last edited by

                    @jay_s_uk Have you managed to sort out why the filament gets fully retracted at the end of the print? Are you absolutely sure that there are no problems with your configuration or the gcode file that you are trying to print?

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

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                    • jay_s_ukundefined
                      jay_s_uk
                      last edited by jay_s_uk

                      @deckingman
                      It's not at the end of the print, its mid print.
                      And I use the same sliced files on all my other machines which run duets

                      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

                        @jay_s_uk Perhaps you have a blocked, or partially blocked nozzle, causing the extruder to skip steps on extrusion moves but not on retraction moves? I've only done limited printing with my experimental hot end, but I can't replicate your problem.

                        Edit. Try disconnecting the filament from the hot end and run that print again to see if you still get hiccups.

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

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                        • jay_s_ukundefined
                          jay_s_uk
                          last edited by

                          @deckingman
                          I'm running a print now without filament and I'm still getting hiccups

                          Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

                            @jay_s_uk What does extruder movement look like? Normal or erratic? Can you upload the gcode file somewhere and post a link to it. I should have my machine back together soon so I can try running your file and see if it gives me the hiccups too 🙂

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

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                            • jay_s_ukundefined
                              jay_s_uk
                              last edited by jay_s_uk

                              Hmm, I've swapped from driver 1 to driver 2 and the problem has gone away.

                              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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                              • deckingmanundefined
                                deckingman
                                last edited by

                                For info, I've just finished a print of about half an hour, ran an M122 part way through and another at the end - no sign of any hiccups

                                Annotation 2020-07-01 142259.png

                                Annotation 2020-07-01 140614.png

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

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                                • jay_s_ukundefined
                                  jay_s_uk
                                  last edited by

                                  Ok, the issue is still there after swapping drivers so ignore that

                                  Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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                                  • dc42undefined
                                    dc42 administrators
                                    last edited by

                                    I'm sorry for the delay. The new firmware was affected by a chip feature that didn't cause a problem in a debug build but did in a release build. It's taken me more than half a day to track it down and fix it, and now I need to review and remove most of my earlier attempted fixes. I should have a beta tomorrow.

                                    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

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

                                      @dc42 no rush

                                      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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                                      • dc42undefined
                                        dc42 administrators
                                        last edited by

                                        I've put a binary of the new EXP3HC firmware at https://www.dropbox.com/s/7rqp6pul9ip3yam/Duet3Firmware_EXP3HC.bin?dl=0. Please monitor it carefully when using it, it's had only a little testing.

                                        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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