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Ender 5 Plus with dual z calibration

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  • undefined
    Veti
    last edited by 2 Oct 2020, 09:27

    measure the resistance of each phases on the cable connecting to the duet.

    undefined 1 Reply Last reply 2 Oct 2020, 11:25 Reply Quote 0
    • undefined
      nightmare90gt @Veti
      last edited by 2 Oct 2020, 11:25

      @Veti to both motors or just the motor having the problem. With power to the motors?

      undefined 1 Reply Last reply 2 Oct 2020, 11:35 Reply Quote 0
      • undefined
        Veti @nightmare90gt
        last edited by 2 Oct 2020, 11:35

        @nightmare90gt

        unplug the motor from the duet (with the duet off).
        measure the resistance of each phase of both motors at the plug.
        they should all be the same.

        1 Reply Last reply Reply Quote 0
        • undefined
          nightmare90gt
          last edited by 2 Oct 2020, 12:31

          2.2 ohms on both motors and each coil

          undefined 1 Reply Last reply 2 Oct 2020, 15:18 Reply Quote 0
          • undefined
            Veti @nightmare90gt
            last edited by 2 Oct 2020, 15:18

            do you know the specs of the motor?

            i found a 2.2 ohm motor and that one is 1.7 A, which would mean you are running way to little current.

            1 Reply Last reply Reply Quote 0
            • undefined
              nightmare90gt
              last edited by 2 Oct 2020, 15:22

              Kay3d told me 1.5a so I went to 1200ma and the stuttering got worse backed it down until the stuttering has appeared to stop at 1050ma

              1 Reply Last reply Reply Quote 0
              • undefined
                nightmare90gt
                last edited by 2 Oct 2020, 15:25

                But still get a little stuttering but not nearly as bad

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                • undefined
                  Veti
                  last edited by Veti 10 Feb 2020, 15:39 2 Oct 2020, 15:38

                  so can you confirm.
                  while the motors are powered, you can move one easily by hand and one not easily.
                  moving that motor to a different driver does not change this behaviour.
                  increasing the motor current makes it worse.

                  on thing to test. disconnect both motors and move the head by hand. see if there is any resistance that feels stronger in some areas.

                  the next thing to try is to replace the motors with the original ones for testing.

                  also can you confirm that you are on firmware 3.1.1?

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                  • undefined
                    nightmare90gt
                    last edited by 2 Oct 2020, 15:52

                    I went up to 3.2beta1 today just to rule out firmware.

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      nightmare90gt
                      last edited by nightmare90gt 10 Feb 2020, 16:05 2 Oct 2020, 15:59

                      Think I figured it out. I looked to be a combination of the wheels on y axis a little to tight and the motor amperage. I appreciate the help and you sticking with me through it.

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                      • undefined
                        Veti
                        last edited by 2 Oct 2020, 16:11

                        stay with 3.1.1 for now. there were some reports with instability.

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                        • undefined
                          nightmare90gt
                          last edited by 2 Oct 2020, 16:16

                          Will back it back down tomorrow thank you

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