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    Z Probe connection

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    Duet Hardware and wiring
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    • whosrdaddyundefined
      whosrdaddy
      last edited by

      Craig, don't use P3, it is used for analog probe types, I have several printers (only cartesion) using P8 which gives the best results...
      Did you setup M574 to use a probe for Z?
      something like M574 Z1 S2

      Craigundefined 1 Reply Last reply Reply Quote 0
      • Craigundefined
        Craig @whosrdaddy
        last edited by

        @whosrdaddy I have tried most of the Modes and I was just trying another variation. BUT, I don't use M574 and its for endstops. I am connected to the Z-Probe pins. ??

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        • Craigundefined
          Craig
          last edited by

          I have a Piezo on my cartesian and love it. It runs on a Smoothie Board. So I have to learn over again how to make it work with a different board.

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          • Craigundefined
            Craig
            last edited by

            This is what I am using for endstops: M574 X2 Y2 Z2 S1

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            • whosrdaddyundefined
              whosrdaddy
              last edited by whosrdaddy

              yeah, I forgot you have a Delta 🙂
              so the config is basically correct.
              Can you confirm that If you set M558 P8 I1 (thats I from Isaac), and you tap the nozzle, you see 1000 as probe value in DWC?

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              • Craigundefined
                Craig
                last edited by

                The code below shows 360 n open and 1000 on closed or at contact. P8 mode did not show anything or respond.

                M558 P1 I1 R0.4 H300 F300 X0 Y0 Z0
                G31 X0 Y0 Z-0.1 P1000 ;
                M557 R155 S20

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                • Craigundefined
                  Craig
                  last edited by

                  This setup gives P=0 and on a tap goes to 1000. With this setup when I press G30 I can't stop the effector from going down. If I let it go, it slows about 50 mm above the bed and then makes two random moves. It then moves to X0 Y0 and probes. Comes up makes two more random moves, then back to X0 Y0 and Z35 and stops. I don't understand all of the movement, but at the end, the location is accurate..

                  ; Z-Probe
                  M558 P5 I1 R0.4 H300 F300 X0 Y0 Z0
                  G31 X0 Y0 Z-0.1 P1000
                  M557 R155 S20

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                  • whosrdaddyundefined
                    whosrdaddy
                    last edited by

                    If P8 does not work then it means that you are running an older firmware.
                    P8 is essentially the same as P5 but unfiltered (so faster).
                    What firmware are you running (check settings page in DWC)?

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                    • Craigundefined
                      Craig @whosrdaddy
                      last edited by

                      @whosrdaddy 1.19.2

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                      • whosrdaddyundefined
                        whosrdaddy @Craig
                        last edited by

                        @craig Thats really old. This will work in 1.21...

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