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Duet 3 BLTouch probing issues

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Duet Hardware and wiring
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  • undefined
    jay_s_uk
    last edited by 1 Dec 2020, 14:33

    I can't see anything in there that would cause the issue.
    Could you reboot the board and run the probing again?
    Could you also post the updated bed file?

    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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    • undefined
      Vampora
      last edited by 1 Dec 2020, 14:35

      Updated bed.g:

      M561 ; clear any existing bed transform
      ;G1 Z5 H2
      G28 ; home
      G30 P0 X2 Y2 Z-99999
      G30 P1 X2 Y229 Z-99999
      G30 P2 X240 Y116 Z-99999 S3
      G1 X0 Y0 F5000 ; move the head to the corner (optional)

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      • undefined
        Vampora
        last edited by 1 Dec 2020, 14:38

        Rebooted, ran g32:

        G32
        Leadscrew adjustments made: -5.000 -5.000 -5.000, points used 3, (mean, deviation) before (-5.000, 0.000) after (-0.000, 0.000)

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        • undefined
          jay_s_uk
          last edited by 1 Dec 2020, 14:41

          Nothing else I can add on this one.
          Maybe one for @Phaedrux or @dc42 to comment on?

          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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          • undefined
            Veti
            last edited by 1 Dec 2020, 14:53

            @Vampora said in Duet 3 BLTouch probing issues:

            G31 X-30 Y0 Z0.75 P25 ; Set the offsets for the bltouch

            change to P1000
            P25 could be triggered by interference.

            undefined 1 Reply Last reply 1 Dec 2020, 15:05 Reply Quote 0
            • undefined
              Vampora @Veti
              last edited by 1 Dec 2020, 15:05

              @Veti said in Duet 3 BLTouch probing issues:

              @Vampora said in Duet 3 BLTouch probing issues:

              G31 X-30 Y0 Z0.75 P25 ; Set the offsets for the bltouch

              change to P1000
              P25 could be triggered by interference.

              No change
              G32
              Leadscrew adjustments made: -5.000 -5.000 -5.000, points used 3, (mean, deviation) before (-5.000, 0.000) after (-0.000, 0.000)

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              • undefined
                Vampora
                last edited by 1 Dec 2020, 16:53

                I just want to make sure..... does anyone think it is the bltouch not being v3.1? I'm debating ordering one since I don't have one, but my gut tells me that is not the issue.

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                • undefined
                  Veti
                  last edited by 1 Dec 2020, 16:56

                  @Vampora said in Duet 3 BLTouch probing issues:

                  M558 P9 C"^io7.in" H5 R1 F120 T6000 A5 S0.02 B1 ; Define the bltouch input on io7.in

                  can you change the H5 to H6 and see if the result changes?

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                  • undefined
                    Vampora
                    last edited by 1 Dec 2020, 17:07

                    I actually just tried bumping it to 10 and this is what I got.

                    It just changes everything to -10 instead of -5

                    M98 P"0:/macros/Probe_Test"
                    G32 bed probe heights: -10.000 -10.000 -10.000 -10.000 -10.000 -10.000 -10.000 -10.000 -10.000 -10.000, mean -10.000, deviation from mean 0.000

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                    • undefined
                      Veti
                      last edited by 1 Dec 2020, 17:14

                      this suggests there is a problem with your bltouch.

                      how many probing of the bed does it actually do when you run the macro?

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                      • undefined
                        Vampora
                        last edited by 1 Dec 2020, 17:19

                        It does 10

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                        • undefined
                          Veti
                          last edited by 1 Dec 2020, 17:22

                          is there an error in the console?

                          this suggest that the bltouch is already triggered.
                          whats the z value in the ui?

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                          • undefined
                            Vampora
                            last edited by Vampora 12 Jan 2020, 17:34 1 Dec 2020, 17:28

                            What I don't understand is the probes work just fine on my other railcores with duet 2 boards.

                            The first time it probes z it will set the z to 0.75 which is the same as my offset. The next time it probes it will say -4.25, and the 3rd will also say -4.25

                            When the command is given to raise to Z5 it says 5.75.

                            Would a video help shed light on it at all?

                            I usually do get random sporadic errors saying that say:

                            G29
                            Error: Z probe was not triggered during probing move

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                            • undefined
                              Vampora
                              last edited by 1 Dec 2020, 17:33

                              This post is deleted!
                              1 Reply Last reply Reply Quote 0
                              • undefined
                                Veti
                                last edited by 1 Dec 2020, 17:35

                                this suggests that there is a wiring problem. maybe a bad crimp on the extension cable.

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                                • undefined
                                  Vampora
                                  last edited by 1 Dec 2020, 17:46

                                  ill post a video of what it does on zhome

                                  https://youtu.be/T1yf528Uigg

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                                  • undefined
                                    Vampora
                                    last edited by 1 Dec 2020, 17:57

                                    Im uploading a video of what the probe does as well on that side. I don't know it looks normal to me.

                                    https://youtu.be/OrtBIjhiNEY

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                                    • undefined
                                      Vampora
                                      last edited by 1 Dec 2020, 18:07

                                      if we do think it is the wiring though i can swap it out. I'm starting to wonder if i shouldn't just go a different probe route and do away with the bltouch all together.

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                                      • undefined
                                        Veti
                                        last edited by 1 Dec 2020, 18:07

                                        @Vampora said in Duet 3 BLTouch probing issues:

                                        M558 P9 C"^io7.in" H5 R1 F120 T6000 A5 S0.02 B1 ; Define the bltouch input on io7.in

                                        can your remove the A5 and try again

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                                        • undefined
                                          Vampora
                                          last edited by 1 Dec 2020, 18:16

                                          Same thing other than it is only probing once now instead of multiple times in each spot.

                                          undefined 1 Reply Last reply 1 Dec 2020, 18:26 Reply Quote 0
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