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    Z-probe commissioning problem

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    Smart effector for delta printers
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    • MoS-tekknixundefined
      MoS-tekknix
      last edited by

      @number40fan:

      …

      Good call on the deploy and retract files too.

      Thanks, i've trapped into the same issue after i'v exchanged BLTouch against Davids IR-Probe 😉

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      • RGN01undefined
        RGN01
        last edited by

        @MoS-tekknix:

        Do you have deployprobe.g and/or retractprobe.g Files in your /sys - Folder?

        Yes, I had those - I guess from the default SD install. I renamed both with a 'old_' prefix but now when I do a G30 the printer seems to freeze and the web interface says 'Busy'

        Should I have left them in place?

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        • MoS-tekknixundefined
          MoS-tekknix
          last edited by

          Did you check the Connections and proofed if you have bad crimped connections as David suggests?

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          • number40fanundefined
            number40fan
            last edited by

            Delete those folders.

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            • RGN01undefined
              RGN01
              last edited by

              @MoS-tekknix:

              Did you check the Connections and proofed if you have bad crimped connections as David suggests?

              I checked them with a multimeter when I installed the cable - it was OK. I'll check again. Thanks.

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              • RGN01undefined
                RGN01
                last edited by

                @number40fan:

                Delete those folders.

                Do you mean files, please?

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                • number40fanundefined
                  number40fan
                  last edited by

                  Yes, the deploy and retract files. Delete them completely.

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                  • RGN01undefined
                    RGN01
                    last edited by

                    @number40fan:

                    Yes, the deploy and retract files. Delete them completely.

                    OK, I've done that, they are deleted.

                    I've also homed the printer and slowly dropped the nozzle until it just touches the bed. The Z-height readings were:
                    Homed: 645.0
                    Touching bed: 212.5

                    And as it touched the bed the Z-probe field went pink and read 1,000 from the normal 0 for a split second.

                    Going to power it down and check the cable as suggested.

                    Thanks for the help, I appreciate it!

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                    • number40fanundefined
                      number40fan
                      last edited by

                      Change the H numbers in M665 to 433. That'll fix the issue.

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                      • RGN01undefined
                        RGN01
                        last edited by

                        Cable is good, no bad crimps and no crossed wires - they are in the same order on both ends.

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                        • number40fanundefined
                          number40fan
                          last edited by

                          What type of motors, pulleys and belts are you running? Reason I ask is your M92 numbers are goofy.

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                          • RGN01undefined
                            RGN01
                            last edited by

                            @number40fan:

                            What type of motors, pulleys and belts are you running? Reason I ask is your M92 numbers are goofy.

                            Motors are 17HM19-2004S, pulleys 16-tooth GT2, belt GT2

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                            • number40fanundefined
                              number40fan
                              last edited by

                              Thanks. You're ok then. Just looked off to me having only ran 20 toothed pulleys.

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                              • RGN01undefined
                                RGN01
                                last edited by

                                Since deleting those two files, issuing a G30 seems to put the printer into a 'frozen' Busy state and only a power reset or emergency stop seems to allow it to move again.

                                The status near to the Emergency Stop in the top right corner changes to Busy and nothing moves after that.

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                                • RGN01undefined
                                  RGN01
                                  last edited by

                                  @number40fan:

                                  Thanks. You're ok then. Just looked off to me having only ran 20 toothed pulleys.

                                  Phew, thank goodness for that! Thanks for checking and pointing it out anyway!

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                                  • number40fanundefined
                                    number40fan
                                    last edited by

                                    Have you changed the H number yet? Just wonder if it is freaking out because your homed height is greater than what your config is.

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                                    • number40fanundefined
                                      number40fan
                                      last edited by

                                      M665 R246.6 L440.0 B180 H443

                                      Try this and see what happens.

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                                      • RGN01undefined
                                        RGN01
                                        last edited by

                                        @number40fan:

                                        Have you changed the H number yet? Just wonder if it is freaking out because your homed height is greater than what your config is.

                                        Yes, if I manually lower the nozzle from homed position it stops at bed height so that seems OK.

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                                        • RGN01undefined
                                          RGN01
                                          last edited by

                                          @number40fan:

                                          M665 R246.6 L440.0 B180 H443

                                          Try this and see what happens.

                                          I have that already - after changing it earlier.

                                          In an effort to fix the 'freezing' problem, I replaced deployprobe.g - it now reacts to the G30 command without freezing - but the original problem returns and it ignores a touch on the nozzle during the G30 operation.

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                                          • number40fanundefined
                                            number40fan
                                            last edited by

                                            Notes from the Wiki.

                                            Version 1.19

                                            Upgrade notes from version 1.18.2:
                                            •Recommended DuetWebControl version is 1.19
                                            •Recommended DuetWiFiServer version is 1.19
                                            •Important! If you use an IR Z probe or some other type that does not need to be deployed, delete the files sys/deployprobe and sys/retractprobe.g if they exist, because they are now called automatically. You can do this in the System Files Editor of the web interface.

                                            You do need those two files removed, so your issue is somewhere else.

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