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    how to calibrate the axes

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    • Rushmere3Dundefined
      Rushmere3D @axiom
      last edited by

      @axiom Whats the tooth count of your pulley's?

      Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

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      • axiomundefined
        axiom @Rushmere3D
        last edited by

        @rushmere3d said in how to calibrate the axes:

        Whats the tooth count of your pulley's?

        I have this information about the stepper motor.... does it do anything?
        957c4cd6-5fba-4134-95c7-f7464427d081-grafik.png

        Rushmere3Dundefined 1 Reply Last reply Reply Quote 0
        • Rushmere3Dundefined
          Rushmere3D @axiom
          last edited by

          @axiom What printer? The pulley is the part the belt ride on. Post your config.g in the </>

          Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

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          • axiomundefined
            axiom @Rushmere3D
            last edited by

            @rushmere3d said in how to calibrate the axes:

            What printer? The pulley is the part the belt ride on. Post your config.g in the

            the printer is self-built... the Z-axis does not run on belts but on a spindle
            Here is the code:

            ; Drives
            M569 P0 S1 ; physical drive 0 goes forwards
            M569 P1 S1 ; physical drive 1 goes forwards
            M569 P2 S0 ; physical drive 2 goes forwards
            M569 P3 S1 ; physical drive 3 goes forwards
            M569 P4 S1 ; physical drive 4 goes forwards
            M584 X0 Y1 Z2 E3:4 ; set drive mapping
            M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation
            M92 X80.00 Y80.00 Z400.00 E420.00:420.00 ; set steps per mm
            M566 X900.00 Y900.00 Z120.00 E120.00:120.00 ; set maximum instantaneous speed changes (mm/min)
            M203 X6000.00 Y6000.00 Z180.00 E1200.00:1200.00 ; set maximum speeds (mm/min)
            M201 X500.00 Y500.00 Z30.00 E250.00:250.00 ; set accelerations (mm/s^2)
            M906 X1800 Y1680 Z2000 E1800:1800 I30 ; set motor currents (mA) and motor idle factor in per cent
            M84 S30 ; Set idle timeout

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            • Rushmere3Dundefined
              Rushmere3D @axiom
              last edited by

              @axiom OK what are the spec of them?

              Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

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              • axiomundefined
                axiom @Rushmere3D
                last edited by

                @rushmere3d fc615018-bba3-484a-ac33-ec22dd1e1a89-grafik.png

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                • Rushmere3Dundefined
                  Rushmere3D @axiom
                  last edited by

                  @axiom Do you 1) have a picture of them 2) a link to where they were purchased? You could work out the step per mm from your movement test It would work out to be around 635 but it's best to do it with the manufactures specs. I can't understand that picture for the info I need.

                  Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

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                  • axiomundefined
                    axiom @Rushmere3D
                    last edited by

                    @rushmere3d
                    https://www.ebay.de/itm/393158460107

                    It ist the version1605 with a pitch of 5mm

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                    • Rushmere3Dundefined
                      Rushmere3D @axiom
                      last edited by

                      @axiom The calulator suggests with a 5mm pitch that your steps per mm should be 640 so M92 Z640

                      Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

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                      • deckingmanundefined
                        deckingman @axiom
                        last edited by deckingman

                        @axiom The calculation goes like this. One revolution of a 1.8 degree stepper (the most common type) is 200 full steps. Assuming your stepper is directly connected to the screw, or you use 1:1 gearing, then we can say that one revolution of the screw is also 200 full steps. The next thing we need to know is how far a lead screw nut would travel if the screw rotated 1 revolution. This is given by the lead of the screw. If the screws are single start then the lead is the same as the pitch. If the screws are two start, then the lead is twice the pitch and if the screws are four start, then the lead is four times the pitch. As an example, let's assume the lead is 2mm. Then we know that in one revolution a nut will travel 2mm. So 200 full steps is 2mm therefore 1mm must be 100 full steps. The steps per mm are usually expressed as 16x micro-stepping so the number you need is 100 x 16 = 1600 steps per mm. If your motors are 0.9 degree, then one full revolution will be 400 full steps giving 200 full steps mm which would be 3200 @ 16X micro stepping.

                        Edit. So you just need to know the step angle of the motor you are using, and the lead of the screw. If the motors are not directly coupled, then you also need to take account of any gearing.

                        Ian
                        https://somei3deas.wordpress.com/
                        https://www.youtube.com/@deckingman

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                        • axiomundefined
                          axiom @deckingman
                          last edited by

                          @deckingman
                          I haven't understood it yet, but maybe also because I can't concentrate so well anymore...it was a long day.

                          But: Z 640 worked!!!! Thank you so much!! I'll have to take my time to look at the explanation again... how long are these dialogs stored in the forum?

                          cheers,
                          Don

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                          • deckingmanundefined
                            deckingman @axiom
                            last edited by

                            @axiom said in how to calibrate the axes:

                            @deckingman
                            I haven't understood it yet, but maybe also because I can't concentrate so well anymore...it was a long day.

                            But: Z 640 worked!!!! Thank you so much!! I'll have to take my time to look at the explanation again... how long are these dialogs stored in the forum?

                            cheers,
                            Don

                            The posts stay pretty much forever.

                            Substituting your 5mm lead into what I said above, we get 200 full steps(one revolution of the motor) gives 5mm of linear movement. So 1mm is 200/5 = 40 full steps. Multiply that by 16x micro stepping and we get 640.

                            Ian
                            https://somei3deas.wordpress.com/
                            https://www.youtube.com/@deckingman

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