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    Issues with pressure advance since RRF 3.4

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    • Argoundefined
      Argo @Heartleander81
      last edited by

      @MartinNYHC has no access to the printer at the moment so maybe @Heartleander81, could you do these tests? https://forum.duet3d.com/post/297234

      1. A print using RRF 3.3 (ideally both with and without the toolboard)
      2. A print using RRF 3.4 but with input shaping disabled (again with and without a toolboard)
      3. A print using RRF 3.4 with input shaping enabled (I think we already have these, but it would be good to confirm them with the same settings and gcode).
        Hopefully all test prints using the same filament etc.
      1 Reply Last reply Reply Quote 0
      • Heartleander81undefined
        Heartleander81
        last edited by Heartleander81

        @Argo

        With which file?
        Which settings?
        I only have PETG filament at home.

        oh flashing back to 3.3, I don't know how that works and whether I changed something from 3.3 to 3.4 in the Config.g, I unfortunately don't know anymore either.

        The problem with and without Toolboard is. I don't have an adapter and then have to re-solder the cable from the motor every time.

        My tests up to now (cube 40x40x2) show that with 3.4.3 the corners are always the same. Whether with toolboard IS on or off and without toolboard with IS on or off. The corners only get smaller when I print a lot slower than 60mm/s

        20221017_161717.jpg

        Argoundefined 1 Reply Last reply Reply Quote 0
        • Argoundefined
          Argo @Heartleander81
          last edited by

          @Heartleander81

          Flashing to 3.3 is the same procedure as flashing ton 3.4.
          Just upload the files to the system folder.
          Maybe the result will be different with RRF 3.3.
          If not then maybe we’ll have to send our printers to Duet3D.

          Heartleander81undefined 1 Reply Last reply Reply Quote 0
          • Heartleander81undefined
            Heartleander81
            last edited by

            I use SBC not standalone

            Phaedruxundefined 1 Reply Last reply Reply Quote 0
            • Phaedruxundefined
              Phaedrux Moderator @Heartleander81
              last edited by

              @Heartleander81 said in Issues with pressure advance since RRF 3.4:

              I use SBC not standalone

              Try this: https://github.com/DanalEstes/DuetVersions

              Z-Bot CoreXY Build | Thingiverse Profile

              Heartleander81undefined 1 Reply Last reply Reply Quote 0
              • Heartleander81undefined
                Heartleander81 @Phaedrux
                last edited by

                @Phaedrux

                Sorry I doun't understand what I must do.
                The git can I clone but what now?

                I think I must install ore copy files on the pi but what and who.

                🙈🤷‍♂️

                Phaedruxundefined 1 Reply Last reply Reply Quote 0
                • Phaedruxundefined
                  Phaedrux Moderator @Heartleander81
                  last edited by Phaedrux

                  @Heartleander81
                  I believe you can also use apt-get to retrieve a specific version.

                  sudo apt-get install <package name>=<version>

                  Though I haven't done that myself.

                  Also see here: https://docs.duet3d.com/User_manual/Machine_configuration/DSF_RPi#downgrade-packages

                  Z-Bot CoreXY Build | Thingiverse Profile

                  Heartleander81undefined 2 Replies Last reply Reply Quote 0
                  • Heartleander81undefined
                    Heartleander81 @Phaedrux
                    last edited by Heartleander81

                    @Phaedrux sudo apt-get install duetsoftwareframework=3.3.0 doun't work

                    1 Reply Last reply Reply Quote 0
                    • Heartleander81undefined
                      Heartleander81 @Phaedrux
                      last edited by

                      @Phaedrux ok have 3.3.0 on MB and Toolboard. Now I test with is on is off extruder on MB and the same with Toolboard

                      1 Reply Last reply Reply Quote 0
                      • Heartleander81undefined
                        Heartleander81 @Argo
                        last edited by Heartleander81

                        @Argo

                        3-3-0Toolboard.jpg
                        3.3.0 PA 0.045 Extruder onToolboard
                        3-3-0Mainboard.jpg
                        3.3.0 PA 0.045 Extruder on Mainboard
                        3-4-4TooboardIS.jpg
                        3.4.4 PA 0.045 Extruder on Toolboard with IS
                        3-4-4Toolboard.jpg
                        3.4.4 PA 0.045 Extruder on Toolboard without IS

                        3.4.4 Extruder on Mainboard with IS and without IS look the same

                        Printed clockwise.
                        Outer walls, inner walls, bottom layer and top layer all at 200mm/s.
                        First layer with 90mm/s .
                        The part is 2mm high with the dimensions 40x40mm.
                        Layer height is 0.2mm.

                        ; Drive direktion
                        M569 P0.1 S0 D2 H20 V2000 				; X physical drive 0.1 goes backwards
                        M569 P0.2 S0 D2 H20 V2000 				; Y physical drive 0.2 goes backwards
                        M569 P0.0 S1 D2 							; Z1 physical drive 0.0 goes forwards
                        M569 P0.4 S1 D2 							; Z2 physical drive 0.4 goes forwards
                        M569 P0.3 S1 D2							; Z3 physical drive 0.3 goes forwards
                        M569 P0.5 S0 D2 							; (free) physical drive 0.5 goes forwards
                        M569 P20.0 S1 D2						; E physical drive 0.0 Driver0 tool goard goes forwards
                        
                        ; Motor mapping and steps per mm
                        M584 X0.1 Y0.2 Z0.0:0.4:0.3 E20.0			; set drivers mapping
                        M350 X16 Y16 Z16 I1						; configure microstepping 1/16 with interpolation
                        M350 E16								; configure microstepping 1/16
                        M92 X80.40 Y80.40 Z800.00 E705.485		; set steps per mm
                        
                        ; Drive currents
                        M906 X1300 Y1300 Z950 E900 				; set motor currents (mA)
                        M906 I80								; motor idle factor in per cent
                        M84 S120 								; set idle timeout
                        
                        ; Acceleration and speed
                        M566 X1800.00 Y1800.00 Z90.00 E3000.00 P1	; set maximum instantaneous speed changes (mm/min)
                        M203 X30000.00 Y30000.00 Z900.00 E15000.00	; set maximum speeds (mm/min)
                        M201 X6000.00 Y6000.00 Z100.00 E1800.00		; set accelerations (mm/s^2)
                        M201.1 Z40.00								; Homimg smooth ACC
                        
                        
                        ; Accelerometer
                        M955 P20.0 I10 S1344 R10			; R12 Accelerometer 20:0 type LIS3DH with orientation 10 samples at 1344Hz with 10-bit resolution
                        
                        ; PA, IS
                        ; At config-override.g
                        
                        
                        Argoundefined 1 Reply Last reply Reply Quote 1
                        • Argoundefined
                          Argo @Heartleander81
                          last edited by

                          @Heartleander81 thanks a lot!

                          @gloomyandy does this help now? 🙂

                          gloomyandyundefined 1 Reply Last reply Reply Quote 0
                          • gloomyandyundefined
                            gloomyandy @Argo
                            last edited by

                            @Argo I'm not sure it does. From what I can see there is not any significant difference between with and without a toolboard, nor is there any difference between 3.3 and 3.4 (when IS is off). The only thing I can see is that there may be some interaction between IS and PA. At least that's my take on the pictures, perhaps others see something different? My understanding is that the advice is to tune PA after you have selected a value for IS, so in this case perhaps a different PA value would remove the differences between the with and without IS cases....

                            The odd thing is that I'm not sure that any of the above tests shows the same degree of bulging corner seen in the sample posted here: https://forum.duet3d.com/post/297824 Which seems a little strange.

                            Heartleander81undefined Argoundefined 2 Replies Last reply Reply Quote 0
                            • Heartleander81undefined
                              Heartleander81 @gloomyandy
                              last edited by

                              @gloomyandy

                              The problem is that the Pa is already increased in the pictures. I used to always use a Pa of 0.035.
                              In the pictures you can see with 0.045 Pa that the walls open in front of the corner but the corner is still sticking out. No longer at a 45° angle but in the direction of travel.
                              If I remember correctly without PA they stand out at a 45° angle.

                              gloomyandyundefined 1 Reply Last reply Reply Quote 0
                              • gloomyandyundefined
                                gloomyandy @Heartleander81
                                last edited by

                                @Heartleander81 Could you edit your previous post (the one with the 4 photos) and either add your config.g file or add details of acceleration, jerk, max speed etc. Also what speed did you set in the slicer for the various walls and infill?

                                Also what was the print direction when printing those tests? I'm guessing it was clockwise with the seam at the bottom left corner?

                                Heartleander81undefined 1 Reply Last reply Reply Quote 0
                                • Heartleander81undefined
                                  Heartleander81 @gloomyandy
                                  last edited by Heartleander81

                                  @gloomyandy
                                  That's right, the Z seam is on the bottom left.

                                  Is Edit with Config.g data

                                  1 Reply Last reply Reply Quote 0
                                  • ladkiiundefined
                                    ladkii
                                    last edited by

                                    I just flashed RRF 3.4 beta 2 as this is the first beta that mentions input shaping and I assume PA has been rewritten for input shaping.

                                    1 Reply Last reply Reply Quote 0
                                    • Argoundefined
                                      Argo @gloomyandy
                                      last edited by

                                      @gloomyandy

                                      Yup, that does not surprise me. I‘m also getting similar results with RRF 3.3 / 3.4 - IS on / off.

                                      So what would be the next step to find the issue?

                                      gloomyandyundefined 1 Reply Last reply Reply Quote 0
                                      • Heartleander81undefined
                                        Heartleander81
                                        last edited by

                                        I can reduce the corners by going very high with the retract and detract. Before I consciously noticed this for the first time, I had PETG 0.2mm with 20mm/s retract. Now if I go to 60 or even 80mm/s the corners get smaller.
                                        Also, the corners get smaller when I slice at <60mm/s.
                                        I've already tried a lot, like reducing values ​​with ACC and Jerk, but all without success.
                                        If I didn't have to run so many cables to my Toolhead, I would swap my Board to rule out that it's the Hardware. Because I have a Board as a replacement on which the Klipper is flashed as a test.

                                        Argoundefined 1 Reply Last reply Reply Quote 0
                                        • Argoundefined
                                          Argo @Heartleander81
                                          last edited by

                                          @Heartleander81

                                          You mean replace the mainboard or the toolboard?
                                          We already had someone test with and without the toolobard. Results were the same.

                                          Heartleander81undefined 1 Reply Last reply Reply Quote 0
                                          • gloomyandyundefined
                                            gloomyandy @Argo
                                            last edited by

                                            @Argo I've reviewed the posts in this thread and so far I think we have had the following theories....

                                            1. It is a new problem introduced with 3.4 (but going back to 3.3 seems to produce the same prints).
                                            2. It is a problem caused by using a toolboard (but using the same extruder etc. directly attached to the control board produces the same prints).
                                            3. Infill and possibly other perimeter lines causing the bulge, perhaps also issues with extrusion rates. I don't think this one ever got investigated fully.
                                            4. Various other examples of bulging corners, but unfortunately no examples showing a better print with the same hardware setup but a different configuration/firmware.

                                            Don't get me wrong obviously some of the prints have bulging corners, but to some extent 3D prints always have and the trend towards faster speeds and accelerations have tended to make this worse. PA and the like can try and improve things, but I'm not sure it can ever fix the problem completely. I also suspect that the use of more outer perimeters (in the past 2 was common, these days 4 seems to be used a lot) may be contributing a little here as a small bulge in each one accumulates, but that is just speculation on my part.

                                            Unfortunately unless someone that is seeing the problem can come up with a setup that demonstrates the issue with one firmware/configuration but does not have it with another when using identical hardware, filament etc. (and that setup can be used to test any changes, debug builds etc.) then I'm not sure how to move things forward. @jay_s_uk has been running various test prints with both RRF and Klipper trying to reproduce things but I don't think he has been able to see any real difference (when using similar speeds/accelerations etc.). I've also tried a bunch of things and have not been able to come up with a test case.

                                            If folks think that this is a problem with RRF PA and that other firmware (Marlin/Klipper) does a better job (again with the same hardware and similar speed acceleration, flow rate etc.). Then perhaps they can post examples of that?

                                            1 Reply Last reply Reply Quote 0
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