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    Strange BLTouch issue. Hightmap it off while printing

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    Tuning and tweaking
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    • RocketPatundefined
      RocketPat @Veti
      last edited by

      @Veti

      yea i gues they are right, the BLtouch is infront and left of the nossle.WhatsApp Image 2020-10-24 at 15.47.32.jpeg

      homeall.g

      ; homeall.g
      ; called to home all axes
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sat Oct 03 2020 22:18:40 GMT+0200 (Mitteleuropäische Sommerzeit)
      G91                     ; relative positioning
      G1 H2 Z5 F6000          ; lift Z relative to current position
      G1 H1 X-245 Y-285 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
      G1 H2 X5 Y5 F6000       ; go back a few mm
      G1 H1 X-245 Y-285 F360  ; move slowly to X and Y axis endstops once more (second pass)
      G90                     ; absolute positioning
      G1 X118 Y185 F6000      ; go to first bed probe point and home Z
      G30                     ; home Z by probing the bed
      
      ; Uncomment the following lines to lift Z after probing
      ;G91                    ; relative positioning
      ;G1 Z5 F100             ; lift Z relative to current position
      ;G90                    ; absolute positioning
      

      my first probe point i set to be the middle of the bed

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      • Vetiundefined
        Veti
        last edited by

        i cant see anything strange in the config

        G30 is called directly before G29.

        but i have to say that are some strange modifications that you made to your cr10.
        switching to linear rods from v-slot and going with a smaller bed.

        can you confirm the firmware version is 3.1.1? using m115

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        • RocketPatundefined
          RocketPat
          last edited by

          I did a new mesh bed test and the result is much better than what i had first... with less probe points and also its right what i get, the left side is higher, what causes the nossel to get higer and that is messing up my print because the printer moves to much up. Than the print dosent stick anymore. And on the right side its too low and crushes into the bed.
          Test2.PNG

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          • RocketPatundefined
            RocketPat
            last edited by

            Yep i updated to the latest Version
            M115
            FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.1.1 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-05-19b2

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            • Vetiundefined
              Veti
              last edited by

              that would be the result of one side of the x gantry sagging.
              when you did your linear rod conversion, did you convert the cr-10 to dual z?

              if yes, then you need to set up this
              https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

              RocketPatundefined 1 Reply Last reply Reply Quote 0
              • RocketPatundefined
                RocketPat @Veti
                last edited by

                @Veti yea i am using dual z leadscrew but the duet 2 wifi featured a second slot for both axes parallel so i am only using 1 z output for both

                Vetiundefined 1 Reply Last reply Reply Quote 0
                • Vetiundefined
                  Veti @RocketPat
                  last edited by

                  @RocketPat
                  your z leadscrews are out of sync. you can correct it manually, but the dual z setup is faster and more accurate.

                  also unless you converted your cr 10 to 24v you are running your z motors at 6V, which might not be enough.

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                  • RocketPatundefined
                    RocketPat
                    last edited by

                    ah okey i am using a 12V PSU but if they run in parallel the voltage should be the same... only the current is dropping

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                    • Vetiundefined
                      Veti
                      last edited by

                      the 2 z connectors on the duet actually run in series rather than in parallel.

                      from the linked site

                      Note that the Z driver (drive 2 on Duet2) has a dual socket wired in series for powering two z motors at once.

                      RocketPatundefined 1 Reply Last reply Reply Quote 0
                      • RocketPatundefined
                        RocketPat @Veti
                        last edited by

                        @Veti ohhh okey so that are some bad news i see haha okey. I will give the independent z setup a try.

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                        • Vetiundefined
                          Veti
                          last edited by

                          @RocketPat said in Strange BLTouch issue. Hightmap it off while printing:

                          M584 X0 Y1 Z2 E3 ; set drive mapping

                          for now change this to
                          M584 X0 Y1 Z2:4 E3 ; set drive mapping

                          connect the second z motor to e1 and place the jumpers on the second z connector.

                          that way you are using 2 motors for now.

                          RocketPatundefined 1 Reply Last reply Reply Quote 0
                          • RocketPatundefined
                            RocketPat @Veti
                            last edited by RocketPat

                            @Veti okey i only need to change that or do i have to do more suff i am reading that hole article for the frist time now and i am kinda scared to set up everythig new again. I will do a quick backup and give it a try.

                            Vetiundefined 1 Reply Last reply Reply Quote 0
                            • Vetiundefined
                              Veti @RocketPat
                              last edited by

                              @RocketPat

                              that changes allows you to use 2 motors for now.
                              you still need to do the rest later.

                              my guess for now is that you are losing steps because of the 6v dual z setup.

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                              • RocketPatundefined
                                RocketPat
                                last edited by

                                okey i am doing a quick first layer print and see what is happening, looking good so far. Nothing exploded.

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                                • RocketPatundefined
                                  RocketPat
                                  last edited by

                                  So now i did quite a bit testing and i got a much better result.
                                  Test3.PNG

                                  Also the true leveling is working now. But i still have too low presure on the left side. I can get a print startet now and it would be working but maby my current is too low now.

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                                  • Vetiundefined
                                    Veti
                                    last edited by

                                    did you measure the real offset of the probe?

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                                    • RocketPatundefined
                                      RocketPat
                                      last edited by

                                      yep i startet at x100 y100 and moved to x117 y143 what means that the offset should be -17 and -43

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                                      • RocketPatundefined
                                        RocketPat
                                        last edited by

                                        okey now i got a new problem, after i restarted the board the hightmap is getting generated but is not used. The motors dosen't correct my print anymore.

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

                                          Can you post your homeall/homez? Where are you probing on the bed to set z0? It looks like you're using a corner rather than the center of the bed.

                                          Z-Bot CoreXY Build | Thingiverse Profile

                                          RocketPatundefined 1 Reply Last reply Reply Quote 0
                                          • RocketPatundefined
                                            RocketPat
                                            last edited by

                                            this is my home all

                                            ; homeall.g
                                            ; called to home all axes
                                            ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sat Oct 03 2020 22:18:40 
                                            
                                            GMT+0200 (Mitteleuropäische Sommerzeit)
                                            G91                     ; relative positioning
                                            G1 H2 Z5 F6000          ; lift Z relative to current position
                                            G1 H1 X-245 Y-285 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
                                            G1 H2 X5 Y5 F6000       ; go back a few mm
                                            G1 H1 X-245 Y-285 F360  ; move slowly to X and Y axis endstops once more (second pass)
                                            G90                     ; absolute positioning
                                            G1 X118 Y185 F6000      ; home Z
                                            G30                     ; home Z by probing the bed
                                            
                                            ; Uncomment the following lines to lift Z after probing
                                            ;G91                    ; relative positioning
                                            ;G1 Z5 F100             ; lift Z relative to current position
                                            ;G90                    ; absolute positioning
                                            

                                            and this is home z

                                            ; homez.g
                                            ; called to home the Z axis
                                            ;
                                            ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sat Oct 03 2020 22:18:40 GMT+0200 (Mitteleuropäische Sommerzeit)
                                            G91                ; relative positioning
                                            G1 H2 Z5 F6000     ; lift Z relative to current position
                                            G90                ; absolute positioning
                                            G1 X20 Y55.5 F6000 ; go to first probe point
                                            G30                ; home Z by probing the bed
                                            
                                            ; Uncomment the following lines to lift Z after probing
                                            ;G91               ; relative positioning
                                            ;G1 Z5 F100        ; lift Z relative to current position
                                            ;G90               ; absolute positioning
                                            
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