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    Nozzle doesn't even go close to the bed surface

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    • FelixHundefined
      FelixH
      last edited by FelixH

      So I'm new to all this Duet environment. All I know is Marlin and Arduino IDE and, I feel really comfortable with those, so apologies if my question/issues are noob-level stuff.

      I set up my Duet WiFi running 2.0 version of the firmware. I connected all the motors, heaters, I calibrated for my thermistors, adjusted currents, steps, speeds, accelerations, etc. I'm using a capacitive 18mm sensor as the Z-probe which has already given me some headache.
      My target is to use mesh compensation to account for the irregularities of the bed, which is as level as I can get it by hand. I followed the step-by-step guide to set the trigger height and so on. However, when I try to print something, the nozzle is way to high from the bed surface. To be more precise, I calculated a trigger height of 0.345, I entered -0.345 on the G31 line on config.g as indicated by the guide, I restarted the board and sent a G29 to measure the bed. On the Slic3r, I add a G29 S1 on the initial gCode to use the mesh saved on the system. However, by a layer height of 0.24mm, the nozzle ends up at 0.9mm from the print bed...

      If somebody could give me a hand with all this mess, I would appreciate it very much. Maybe I'm confused with new terms?

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      • dc42undefined
        dc42 administrators
        last edited by dc42

        You need to enter the G31 trigger height as 0.345 not -0.345. In RRF a positive value means that the probe triggers with the nozzle above the bed.

        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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        • FelixHundefined
          FelixH
          last edited by

          I will try that and see what happens

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          • FelixHundefined
            FelixH
            last edited by

            well, for the love of me that I tried that more than once today and somehow I didn't figured it out... it seems to work now though... thanks a lot!

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            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              You may want to upgrade to firmware 2.02 as well.

              Z-Bot CoreXY Build | Thingiverse Profile

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