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    Reducing PWM Fan noise on 5015

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    • Vetiundefined
      Veti
      last edited by

      Hi

      I just installed a new 5v 5015 Fan.
      This fan produces annoying sound at any frequency when not running at 100%.

      Searching for a Solution i came accross a post that said you can put a 220 microFarad 16V Capacitor in between the Fan and the Board.
      This was for a 12V Fan on an Arduino board.

      Would this theoretically work on the duet as well or could this damage the duet?

      dc42undefined 1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @Veti
        last edited by

        @veti, I don't recommend that because it could damage the Duet. Instead, try changing the PWM frequency, using the RF parameter of the M106 command (e.g. for Fan 0 try M106 P0 F100, M106 P0 F1000 etc.).

        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

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        • Vetiundefined
          Veti
          last edited by

          i checked all the frequencies on this fan from 100 to 10000 at which point the fan stops.

          Do you have a recommendation for a good 5015 fan at 5v?

          wilrikerundefined 1 Reply Last reply Reply Quote 0
          • wilrikerundefined
            wilriker @Veti
            last edited by

            @veti I run mine at a frequency of only 10 Hertz. You could also try going that low. It solved most of my issues with noise at running below full speed.

            Manuel
            Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
            with probably always latest firmware/DWC (incl. betas or self-compiled)
            My Tool Collection

            1 Reply Last reply Reply Quote 2
            • dc42undefined
              dc42 administrators
              last edited by

              Some fans just don't like have PWM applied to the supply voltage. There is another way, involving an LC filter and a very high PWM frequency.

              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

              1 Reply Last reply Reply Quote 1
              • wilrikerundefined
                wilriker
                last edited by

                @Veti See this (lengthy) thread discussing the topic of RC-filter and LC-filter and recommendations by @dc42 on how to select the components for the recommended LC-filter.

                Manuel
                Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                with probably always latest firmware/DWC (incl. betas or self-compiled)
                My Tool Collection

                1 Reply Last reply Reply Quote 1
                • Vetiundefined
                  Veti
                  last edited by

                  unfortunatly 10HZ is still noisier than 100%. It prob is then fan.
                  Thanks for the link to the Filter, i will have a look.

                  I also contacted noctua and asked if they would be willing to produce a 5015 pwm fan. They told me the are currently looking into radial fans, but as they do not have much experience with it it might be another year before we see a product.

                  wilrikerundefined 1 Reply Last reply Reply Quote 1
                  • wilrikerundefined
                    wilriker @Veti
                    last edited by

                    @veti said in Reducing PWM Fan noise on 5015:

                    I also contacted noctua and asked if they would be willing to produce a 5015 pwm fan. They told me the are currently looking into radial fans, but as they do not have much experience with it it might be another year before we see a product.

                    Still very interesting news! 👍

                    Manuel
                    Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                    with probably always latest firmware/DWC (incl. betas or self-compiled)
                    My Tool Collection

                    1 Reply Last reply Reply Quote 0
                    • dragonnundefined
                      dragonn
                      last edited by

                      What is you fan?
                      I suggest buying a genuine Sunon MF50151VX-A99 , they are super powerful and work fine with default PWM settings in Duet.

                      1 Reply Last reply Reply Quote 0
                      • Vetiundefined
                        Veti
                        last edited by

                        @dragonn said in Reducing PWM Fan noise on 5015:

                        Sunon MF50151VX-A99

                        Thats a 12V fan. I am running the fans at 5V.

                        its a YINWEITAI YWT-0505CH

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

                          @veti I suggest going to digikey or mouser and start filtering the radial fan results until you get a few options that look reasonable. Sunon does have 5v options as well. They make a wide range of radial fans with all sorts of properties.

                          Z-Bot CoreXY Build | Thingiverse Profile

                          1 Reply Last reply Reply Quote 0
                          • Vetiundefined
                            Veti
                            last edited by

                            i just ordered the best rated radial fan from amazon. lets see how that ones does.

                            1 Reply Last reply Reply Quote 0
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