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    Duet 3 mini 5+ screeching noise when moving stepper motors

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    • Ray.Rundefined
      Ray.R @Phaedrux
      last edited by

      @phaedrux I enabled stealth chop and its still making the noise, albeit more quite but, it is still significantly louder than expected.

      deckingmanundefined 2 Replies Last reply Reply Quote 0
      • deckingmanundefined
        deckingman @Ray.R
        last edited by

        @ray-r Why are the motor currents for XY and Z only one third of the current for the extruder? We could really do with knowing the specification of the motors.

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

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        • deckingmanundefined
          deckingman @Ray.R
          last edited by

          @ray-r Also, having only 10% holding current on 400 mA means it'll be 40mA which will do next to nothing in terms of holding position. Set it to 50% and see if that makes any difference to the sound you hear.

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

          Ray.Rundefined 1 Reply Last reply Reply Quote 0
          • Ray.Rundefined
            Ray.R @deckingman
            last edited by

            @deckingman I would to provide information on the stepper motors but, unfortunately there is no information on these stepper motors. I already looked online for the model number/manufacturer but there is no info. Ill add a picture of the stepper motor for reference. 20220629_050123.jpg

            deckingmanundefined 1 Reply Last reply Reply Quote 0
            • Ray.Rundefined
              Ray.R @Phaedrux
              last edited by

              @phaedrux So what are my options here? Do i need to replace the stepper motors or is this going to happen with any system that I plug into the Duet 3?

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              • deckingmanundefined
                deckingman @Ray.R
                last edited by

                @ray-r Are the model numbers the same on the axes motors as the extruder? If they are, then it would reasonably safe to assume that you could make the motor current the same for all of them - i.e. increase it to 1200mA. I'm not saying it will cure your problem, but it might.

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

                Ray.Rundefined 1 Reply Last reply Reply Quote 0
                • Ray.Rundefined
                  Ray.R @deckingman
                  last edited by

                  @deckingman they are essential with slight variations to there model number. For instance the y stepper motor end in 01N instead of 02N and the Z is 03N. The stepper motor current is set so high on the extruder is because I'm using the orbiter V1.5 and that's there recommended current usage. I will try to up the current and see if that helps.

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                  • dc42undefined
                    dc42 administrators @Ray.R
                    last edited by

                    @ray-r looking at your config.g file I see that you have the X, Y and Z motors set to the same steps/mm (M92), maximum speed (M203) and acceleration (M201). From photos I find on the web it appears to me that the Cetus 3D is a Cartesian printer with a leadscrew-driven Z axis. If that's the case then the Z axis will almost certainly have a higher steps/mm than X and Y, and it will need a lower maximum speed and acceleration; so I am not surprised that the Z motor screeches when you try to move it.

                    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

                    Ray.Rundefined 1 Reply Last reply Reply Quote 0
                    • Ray.Rundefined
                      Ray.R @dc42
                      last edited by

                      @dc42 I don't think that is true, or at least not for the one that I have. My printer is on linear rails driven by a belt. That goes for all axis'. I originally modeled my config file off of CNC Kitchen's config for his Cetus, https://youtu.be/WcPyujDF2eU, video for reference. It still gave me the loud noise when operating the stepper motors. I will try to lower the speed and acceleration. Hopefully that works. Thank you all for the help.16565510568184696851615040336305.jpg

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                      • Jman3undefined Jman3 referenced this topic
                      • nikschaundefined
                        nikscha
                        last edited by

                        I also have a Cetus MK2, and I have the same problem.

                        I just switched from a Duet2 Wifi to a Mini5+, and suddenly the Y motor makes a nasty screetching noise. The other motors are fine, and before, when the Duet wifi was running things there was also no noise.

                        I've experimented with different current values, with microstepping and interpolation and with tuning stealthchop, but so far nothing helped. Any ideas?

                        Stay in school

                        droftartsundefined 1 Reply Last reply Reply Quote 0
                        • droftartsundefined
                          droftarts administrators @nikscha
                          last edited by

                          @nikscha The Duet 2 WiFi is set to spreadCycle continuously. You could try running it in spreadCycle on the Mini 5+, and to avoid coil whine have it switch to stealthChop when stationary (set changeover speed at below the jerk value). The spreadCycle on the Mini 5+ is different from the Duet 2; they use different drivers, and different versions of spreadCycle.

                          Are the other axes noisy? What happens if you swap motors over?

                          Ian

                          Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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