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    Plain old inductive sensor for Z height?

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    • davidvh86undefined
      davidvh86 @Corexy
      last edited by davidvh86

      @Corexy

      https://www.amazon.com/gp/product/B07P5CH491/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

      out of stock but look for LJ18A3-8-Z/AX

      If you havent got a plate yet check out ezflex

      https://www.th3dstudio.com/product/ezflex2-flex-plate-smooth-or-textured-pei-coating/

      Corexyundefined 1 Reply Last reply Reply Quote 0
      • Corexyundefined
        Corexy @davidvh86
        last edited by

        @davidvh86 said in Plain old inductive sensor for Z height?:

        @Corexy

        https://www.amazon.com/gp/product/B07P5CH491/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

        out of stock but look for LJ18A3-8-Z/AX

        If you havent got a plate yet check out ezflex

        https://www.th3dstudio.com/product/ezflex2-flex-plate-smooth-or-textured-pei-coating/

        Thank you.

        So that's an 18mm diameter body on that one? Isn't that the one that triggers around 8mm from the bed?

        davidvh86undefined 1 Reply Last reply Reply Quote 0
        • Kolbiundefined
          Kolbi
          last edited by

          @Corexy Do remember that when shifting build plate types - when using an inductive probe, the trigger distance can/will change. I've had good luck with the following in my config.g to rapidly setup.

          ; Z-Offsets - Read here: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe   
          ; G31 P1000 X23 Y5 Z1.240                        ; PEI Sheet (Prusa) Offset MICRO SWISS NOZZLE	
          ; G31 P1000 X23 Y5 Z0.85                         ; Textured Sheet (Prusa) Offset MICRO SWISS NOZZLE
          G31 P1000 X23 Y5 Z0.64                           ; Textured Sheet (thekkiinngg) Offset MICRO SWISS NOZZLE
          
          1 Reply Last reply Reply Quote 0
          • A Former User?
            A Former User
            last edited by

            given the trigger distance to what the sensor actually triggers against doesn't change, maybe using work offsets is a cleaner option than changing the probing?

            Kolbiundefined 1 Reply Last reply Reply Quote 0
            • Kolbiundefined
              Kolbi @A Former User
              last edited by

              @bearer Work offsets are prob the more correct option, but since it only took a few seconds to change and reset the printer with the above method, it was good enough for me at the time. But this is one of the reasons why I'm shifting to BLTouch...

              fcwiltundefined 1 Reply Last reply Reply Quote 0
              • fcwiltundefined
                fcwilt @Kolbi
                last edited by fcwilt

                @Kolbi said in Plain old inductive sensor for Z height?:

                @bearer Work offsets are prob the more correct option, but since it only took a few seconds to change and reset the printer with the above method, it was good enough for me at the time. But this is one of the reasons why I'm shifting to BLTouch...

                Hi,

                I don't setup my z probe in config.g.

                I have a separate macro for that that I invoke in code before setting the Z=0 datum using G30 or before creating the height map using G29.

                I also have a macro button that cycles the name of a dummy fan that I am using as a mode variable. When the probe config macro executes it checks the current name of the dummy fan and changes the probe settings accordingly.

                Now in my case I am changing from "consecutive readings" mode to "average readings" mode BUT it could be used in the same way to change any other setting, like the trigger height for different materials.

                I don't have to edit any code, just click the macro button to select the desired mode.

                Just a thought.

                Frederick

                Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                Kolbiundefined 1 Reply Last reply Reply Quote 0
                • Kolbiundefined
                  Kolbi @fcwilt
                  last edited by

                  @fcwilt Nicely done, hence your prior research into variables - makes sense now.

                  fcwiltundefined 1 Reply Last reply Reply Quote 0
                  • fcwiltundefined
                    fcwilt @Kolbi
                    last edited by fcwilt

                    @Kolbi said in Plain old inductive sensor for Z height?:

                    @fcwilt Nicely done, hence your prior research into variables - makes sense now.

                    While dummy fans are not ideal they allow, for now, what I wanted to do.

                    My code is much simpler now in the sense I don't have to edit anything to change the settings, just click the macro button.

                    I also have a "height map mode" dummy fan that controls the creation of the height map.

                    Before I had 6 different macros that I had to edit in/out of code. Now I have two unchanging macros and the mode variables.


                    Getting true variables is only part of the job. The dummy fan names displays in DWC like any other fan so I can see the modes at a glance.

                    We are going to need something new in DWC to allow displaying of variables to use this approach with variables.

                    Frederick

                    Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                    Kolbiundefined 1 Reply Last reply Reply Quote 1
                    • Kolbiundefined
                      Kolbi @fcwilt
                      last edited by

                      @fcwilt It didnt even occur to me the use/display of variables in DWC. That would be way cool, especially if you could assign the variable a title in DWC and display it's contents - just as anything else. Fingers crossed 🤞

                      1 Reply Last reply Reply Quote 1
                      • davidvh86undefined
                        davidvh86 @Corexy
                        last edited by

                        @Corexy
                        yes, the smaller bodies seem to have a closer trigger range, which might be a big deal but i wanted a good safety margin.

                        1 Reply Last reply Reply Quote 1
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