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Eccentric Probe on a Delta Printer

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  • undefined
    ignacmc
    last edited by 2 Feb 2022, 09:28

    Hello to all.

    I am thinking about resurrecting my Anycubic Kossel Linear Plus with a Duet board. But I would prefer to reuse a Superpinda sensor that I have at hand as a probe. Obviously this can only be mounted eccentrically (around 30mm X Offset and 20mm Y Offset). I have tried before using Marlin and Klipper but despite all the Delta Calibration and Z offset calibration routines being completed successfully, the first layer is rubbish, being too thin at one side and too thick at the opposite. Of course I have correctly accounted for the X and Y offset in the configuration files.

    My question is: Is an eccentric probe a VIABLE OPTION for a Delta? Can I do Delta Calibration automatically with the SuperPinda or doing it manually with a paper grab test is my only option?

    I know a eccentric probe causes problems with effector tilting, but I had hoped it could be compensated by the software.

    Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

    undefined undefined undefined 3 Replies Last reply 2 Feb 2022, 09:32 Reply Quote 0
    • undefined
      jay_s_uk @ignacmc
      last edited by 2 Feb 2022, 09:32

      @ignacmc an offset probe doesn't cause effector tilt but is affected by it. The issue you'll have is you don't know how much the effector is tilting at each point so my advice would be use a removeable probe that sits below the hotend on X0 Y0.

      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

      undefined 1 Reply Last reply 2 Feb 2022, 09:47 Reply Quote 0
      • undefined
        ignacmc @jay_s_uk
        last edited by 2 Feb 2022, 09:47

        @jay_s_uk A removable probe that sits below the nozzle came from factory with the printer....but after getting used to inductive sensors with my Prusa Mini, I would like to replicate it on a Delta...definitively it cannot be done? I believe that Tevo Little Monster and others (FLSun?) use eccentric probes (BLTouch). And i suppose it works for them.

        Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

        undefined 1 Reply Last reply 2 Feb 2022, 09:49 Reply Quote 0
        • undefined
          jay_s_uk @ignacmc
          last edited by 2 Feb 2022, 09:49

          @ignacmc as i say, i wouldn't advise it. you're just entering a world of pain for no gain. i wouldn't touch any delta that installs an offset bltouch

          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

          undefined 1 Reply Last reply 2 Feb 2022, 09:52 Reply Quote 0
          • undefined
            ignacmc @jay_s_uk
            last edited by 2 Feb 2022, 09:52

            @jay_s_uk Noted! šŸ˜‰ I would like to know the experience of a BLTouch Delta Printer owner just for curiosity....

            Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

            ? 1 Reply Last reply 2 Feb 2022, 10:28 Reply Quote 1
            • ?
              A Former User @ignacmc
              last edited by A Former User 2 Feb 2022, 10:29 2 Feb 2022, 10:28

              This post is deleted!
              undefined 1 Reply Last reply 2 Feb 2022, 11:08 Reply Quote 1
              • undefined
                Barracuda72 @ignacmc
                last edited by Barracuda72 2 Feb 2022, 11:03 2 Feb 2022, 11:01

                @ignacmc Honestly..i started with a Anycubic Kossel too many years ago..if you want to invest a duet board into that printer...do it right and take also the Smart effector. beside the fact that you are mostly bound to the V6 hotends its still the hottest sh** for a Delta Printer...no offset in probing...and no thinking about Z-Offset after a nozzle change

                undefined 1 Reply Last reply 2 Feb 2022, 11:25 Reply Quote 0
                • undefined
                  ignacmc @A Former User
                  last edited by 2 Feb 2022, 11:08

                  @arnold_r_clark Thanks Arnold...your very clear explanation adds to jay's one...I think is time for getting another SmartEffector. Or doing fully manual calibration with the nozzle tip ignoring the inductive sensor...

                  Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

                  1 Reply Last reply Reply Quote 1
                  • undefined
                    ignacmc @Barracuda72
                    last edited by 2 Feb 2022, 11:25

                    @barracuda72 I already have a Predator set up that way (Duet3 Mini 5+ with Smarteffector) and perfect so far!

                    Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      CabalSoul @ignacmc
                      last edited by 2 Feb 2022, 12:34

                      @ignacmc I’m using a Super Pinda on an Anycubic predator. I use it solely for z datum.
                      When I’m calibrating I’m using a fsr nozzle probe. It works great that way.

                      Due to the offset and effector tilt I would strongly advise against using it as the only z probe.

                      Anycubic Predator, Orbiter Extruder , Duet Wifi, Mosquito Hotend, Remote Extruder Stepper cooling and Part cooling

                      undefined 1 Reply Last reply 2 Feb 2022, 13:49 Reply Quote 0
                      • undefined
                        ignacmc @CabalSoul
                        last edited by 2 Feb 2022, 13:49

                        Thanks to everybody for your time and suggestions. You have made this issue crystal clear to me šŸ˜‰
                        Wonder why some manufacturers still ship deltas with bltouch....

                        Predator with Duet3 Mini 5+, Smarteffector v4 and LGX Lite Extruder

                        1 Reply Last reply Reply Quote 0
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