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    SOLVED Duet 3 mini 5+ connecting fans

    Duet Hardware and wiring
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    • Alucardi
      Alucardi last edited by

      Trying to figure out on how to connect fans. I just have 2 cables. Which pins do i use? I tried V_OUTLC1+ and OUT3-. Should i connect V_OUTLC1+ to out4.tach instead?
      While i typed this message i just saw out 5-6, should i use them instead?

      Stephen6309 1 Reply Last reply Reply Quote 0
      • Stephen6309
        Stephen6309 @Alucardi last edited by

        @Alucardi I use OUT5 and OUT6 for two wire fans on mine. Make sure to set the voltage jumper for what your fans need.

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        • Phaedrux
          Phaedrux Moderator last edited by Phaedrux

          https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+3+Mini+5++Guide+Part+1:+Wiring/87?lang=en

          Specifically steps 10 and 11.

          Z-Bot CoreXY Build | Thingiverse Profile

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          • Alucardi
            Alucardi last edited by Alucardi

            well there is something wrong cause it keeps burning my fans now. I killed 3 fans! WTF it was working fine last night but now out of the blue it kills my fans. I had 3 12v blowers and 2 cooling fans all dead. Even tried pc fan and it died to. What can i can?

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

              @Alucardi

              are you sure you changed to jumper to 12v? 24v will burn out the fans.

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

                @Veti no. I must have miss read. I read it as 5-6 was set on 12v and 3-4 was vin but it was the other way around 🤷‍♂️
                I do have a few 5v blowers. I also have a bukconverter. Can I just pull power from that? If so do I just connect plus to the converter?

                21F717B0-3969-4B0E-9D75-168E65263884.jpeg

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                • Veti
                  Veti last edited by

                  thank you for running the test.
                  i always wondered how long 12v fans would survive on 24v.
                  so apparently not long.

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

                    @Veti lol not even a second! Btw can I just connect the + to a buck converter and run that on 5v and - to OUT6? Cause I have several 5 volt blowers but no more 12v.

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

                      that should work, but it would be best if someone else can confirm this works on the mini as well.

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                      • Alucardi
                        Alucardi @Alucardi last edited by

                        @Alucardi said in Duet 3 mini 5+ connecting fans:

                        @Veti lol not even a second! Btw can I just connect the + to a buck converter and run that on 5v and - to OUT6? Cause I have several 5 volt blowers but no more 12v.

                        @dc42 can you confirm?

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

                          @Alucardi said in Duet 3 mini 5+ connecting fans:

                          @Alucardi said in Duet 3 mini 5+ connecting fans:

                          @Veti lol not even a second! Btw can I just connect the + to a buck converter and run that on 5v and - to OUT6? Cause I have several 5 volt blowers but no more 12v.

                          @dc42 can you confirm?

                          Yes, that would work,. However, as well as blowing the fans, it's quite likely that you have blown the fan mosfets on those outputs.

                          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

                          Alucardi 1 Reply Last reply Reply Quote 0
                          • Alucardi
                            Alucardi @dc42 last edited by

                            @dc42 i tried them with a pc fan and it was fine.

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

                              @Alucardi said in Duet 3 mini 5+ connecting fans:

                              @dc42 i tried them with a pc fan and it was fine.

                              That's good news!

                              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 0
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