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    Question on Z Probe display on DWC

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    Smart effector for delta printers
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    • DaveAundefined
      DaveA
      last edited by

      I've noticed that when the smart effector is probing the bed that the Z Probe field in the DWC does not always update. I can see the LED flash when the effector touches the bed but the value remains at zero. Other times the display is updated to 1000. This is using the new P8 as the M558 option. The SE is currently set to default sensitivity. Using the latest firmware and DWC. I've tried changing the sensitivity but it doesn't make much difference.

      Is this a symptom of a problem or is it just that the DWC doesn't always update properly? The delta calibrates OK and the height map is not bad but I sometimes get a flyer value that doesn't make sense.

      Thanks.

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      • DjDemonDundefined
        DjDemonD
        last edited by

        DWC only updates periodically and so not every trigger is seen.

        Simon. Precision Piezo Z-Probe Technology
        www.precisionpiezo.co.uk
        PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

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        • DaveAundefined
          DaveA
          last edited by

          Thanks, that was sort of what I expected. I wasn't sure if the firmware was able to push a update to the DWC or if the DWC polled the firmware. Just a little disconcerting to not see a change when you're expecting it.

          While I'm here is P8 now the recommended switch setting for the SE? Any reason not to use P8?

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          • PlasticMetalundefined
            PlasticMetal
            last edited by

            I'm curious - where is P8 documented? I did a quick search here and didn't get any hits. The Smart Effector wiki states P5, and the Duet G-code wiki (https://duet3d.com/wiki/G-code#M558:_Set_Z_probe_type) doesn't list anything past P6.

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            • Dougal1957undefined
              Dougal1957
              last edited by

              see https://github.com/dc42/RepRapFirmware/blob/dev/WHATS_NEW.md in the 1.20beta10 section P8 is same as P5 but with the filtering removed.

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              • dc42undefined
                dc42 administrators
                last edited by

                I've now added it to the GCodes wiki page.

                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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                • PlasticMetalundefined
                  PlasticMetal
                  last edited by

                  Thanks - I was beginning to think it was a beta thing. My life is too busy to test & track betas these days, and so I only read release notes when I upgrade to a stable version. These days, I just want things to work.

                  I do, however, appreciate all the people who take the time to develop & test the alphas and betas. I spent a couple years as a designated beta tester for 2 different handheld GPS units several years ago. I well remember the time involved, testing hardware and firmware features over and over, trying all sorts of various ways to wring out any problems. Even before then, I worked for HP (commercial printer group) for a while as a firmware test technician, running HP-UX routines and slaughtering hordes of trees in the process.

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