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    Duet 2 vs Duet 3 - Noise Levels

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    • Doppler9000
      Doppler9000 last edited by

      Choosing a board.

      I am wondering to what degree the Duet 3 will reduce noise over a Duet 2 at low speeds. Any quantification?

      TIA

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      • Phaedrux
        Phaedrux Moderator last edited by

        Well the Duet3 supports stealthchop at low speeds, so that should help theoretically, but it will largely depend on the motors and application in practice.

        Z-Bot CoreXY Build | Thingiverse Profile

        Doppler9000 1 Reply Last reply Reply Quote 0
        • Doppler9000
          Doppler9000 @Phaedrux last edited by

          @Phaedrux

          Thank you for the quick reply.

          It is for a 240 x 240 x 320 corexy.

          What NEMA 17 motors would be the quietest with the Duet 3?

          Nuramori 1 Reply Last reply Reply Quote 0
          • Nuramori
            Nuramori @Doppler9000 last edited by Nuramori

            @Doppler9000 the moons motors with the duet3 are extremely quiet. That’s what I have on my blv cube.

            Doppler9000 2 Replies Last reply Reply Quote 0
            • Doppler9000
              Doppler9000 @Nuramori last edited by

              @Nuramori
              Thank you!

              The build is based on the BLV, using the new CNC aluminum parts.

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              • Doppler9000
                Doppler9000 @Nuramori last edited by

                @Nuramori

                Which Moon’s are you running?

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                • A Former User
                  A Former User last edited by A Former User

                  Given the same motors, speeds and loads, the Duet 3 is capable of being quieter.

                  Probably less difference between the Maestro and Duet 3 as both support stealthchop, but weather or not you want to use stealthchop depends on your speed and/or torque requirements afaik.

                  Unless you need the high current ability or expandability of the Duet 3, the Maestro might be an option.

                  Edit: Maestro will not support stallguard / sensorless homing however, but as far as i'm concerned its of less use

                  Doppler9000 1 Reply Last reply Reply Quote 0
                  • Doppler9000
                    Doppler9000 @Guest last edited by Doppler9000

                    @bearer said in Duet 2 vs Duet 3 - Noise Levels:

                    Given the same motors, speeds and loads, the Duet 3 is capable of being quieter.

                    Probably less difference between the Maestro and Duet 3 as both support stealthchop, but weather or not you want to use stealthchop depends on your speed and/or torque requirements afaik.

                    Unless you need the high current ability or expandability of the Duet 3, the Maestro might be an option.

                    Edit: Maestro will not support stallguard / sensorless homing however, but as far as i'm concerned its of less use

                    If the Maestro would work, current-wise, it would be ideal, as I don’t need the additional capabilities of the Duet 3.

                    I plan to put he board in an enclosure with 2 8” Noctua fans, so I could run it relatively hard.

                    How does one determine the current requirement threshold?

                    Phaedrux 1 Reply Last reply Reply Quote 0
                    • Phaedrux
                      Phaedrux Moderator @Doppler9000 last edited by

                      @Doppler9000 said in Duet 2 vs Duet 3 - Noise Levels:

                      How does one determine the current requirement threshold?

                      https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors

                      The typical recommendation is to set the current to 70-85% of the rated max of the motor.

                      Z-Bot CoreXY Build | Thingiverse Profile

                      Doppler9000 1 Reply Last reply Reply Quote 0
                      • gtj0
                        gtj0 last edited by

                        And don't forget, the drivers on the Duet3 support interpolated stepping at all microstepping settings so you could have microstepping set to 32 for (possibly) better precision and interpolation turned on for quieter operation.

                        Phaedrux 1 Reply Last reply Reply Quote 0
                        • Phaedrux
                          Phaedrux Moderator @gtj0 last edited by

                          @gtj0 said in Duet 2 vs Duet 3 - Noise Levels:

                          And don't forget, the drivers on the Duet3 support interpolated stepping at all microstepping settings so you could have microstepping set to 32 for (possibly) better precision and interpolation turned on for quieter operation.

                          This is also true of the Maestro

                          Z-Bot CoreXY Build | Thingiverse Profile

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                          • gtj0
                            gtj0 last edited by

                            Heh, I forgot the Maestro. 🙂

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                            • Doppler9000
                              Doppler9000 @Phaedrux last edited by Doppler9000

                              @Phaedrux said in Duet 2 vs Duet 3 - Noise Levels:

                              @Doppler9000 said in Duet 2 vs Duet 3 - Noise Levels:

                              How does one determine the current requirement threshold?

                              https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors

                              The typical recommendation is to set the current to 70-85% of the rated max of the motor.

                              Sorry, I wasn’t clear.

                              I meant the threshold for motor current.

                              I can calculate the speeds, etc., using an estimate of the masses, but if designing for quiet operation, does that mean that lower current/torque motors will work? I am assuming there are competing criteria that are negatively correlated, so it is more complicated...

                              Phaedrux 1 Reply Last reply Reply Quote 0
                              • Phaedrux
                                Phaedrux Moderator @Doppler9000 last edited by

                                @Doppler9000 I'm really not sure. If noise is the biggest consideration you have then I would think that right sizing the motors such that you have only enough torque as you need it would make most sense to choose the lowest current 0.9 degree steppers you can.

                                These calculators may help you evaluate steppers.

                                https://www.reprapfirmware.org/ (select the EMF calculator)
                                https://wilriker.github.io/maximum-acceleration-calculator/

                                Z-Bot CoreXY Build | Thingiverse Profile

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