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    Heater VIN for Part Fan or how to assign Fan 2 to Tool 0

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    • Vetiundefined
      Veti
      last edited by

      please post your entire config

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      • deckingmanundefined
        deckingman @Jorge
        last edited by

        @jorge What is the voltage of your power supply, and what is the voltage of the fan you are trying to use? Also, have you seen this https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans?

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

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        • Jorgeundefined
          Jorge
          last edited by Jorge

          Here is my config:
          0_1555923956089_config.g

          My power supply has 24V and the fan as well.
          I have read the article. Thats where I found the M563 command. But I must misunderstand something.

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

            for the fans to be controlled by m106 you have to turn off Thermostatic control.
            you also dont have a config for fan 2.
            see the configurator. https://configurator.reprapfirmware.org/Start

            also max speed of 90000 is a bit high.

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            • deckingmanundefined
              deckingman @Jorge
              last edited by

              @jorge

              To get a fan to work as a part cooling fan, and as @Veti said, you need to turn off thermostactic mode by using H-1.

              So for fan 0, you need to use something like M106 P0 S0 I0 H-1 and likewise if you want to use fan 2, then M106 P2 S0 I0 H-1. The simplest thing would be to use fan 0, then you don't need to map a different fan to a tool.

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

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              • dc42undefined
                dc42 administrators
                last edited by

                @Jorge, for schematics see https://github.com/T3P3/Duet.

                Fan 1 on the Duet WiFi/Ethernet is set up as a thermostatic hot end fan by default, so to use it as a part cooling fan you need to disable thermostatic mode as @deckingman says. Fans 0 and 2 should be controllable by default. So maybe there is something wrong with your Fan0 output.

                You can map the part cooling fan to particular fans using the F parameter of your M563 tool definition commands. For example, if your M563 P0 command includes parameter F2 then any M106 command without a P parameter will be routed to Fan2 when tool 0 is active.

                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

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

                  @dc42 said in Heater VIN for Part Fan or how to assign Fan 2 to Tool 0:

                  .................Fans 0 and 2 should be controllable by default. So maybe there is something wrong with your Fan0 output.

                  David. If you take a gander at the config.g that the OP posted, you'll see that he had set Fan 0 set to be thermostatic. So there may well be nothing wrong with the output.

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

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

                    @deckingman said in Heater VIN for Part Fan or how to assign Fan 2 to Tool 0:

                    @dc42 said in Heater VIN for Part Fan or how to assign Fan 2 to Tool 0:

                    .................Fans 0 and 2 should be controllable by default. So maybe there is something wrong with your Fan0 output.

                    David. If you take a gander at the config.g that the OP posted, you'll see that he had set Fan 0 set to be thermostatic. So there may well be nothing wrong with the output.

                    Good point:

                    M106 P0 S0 I0 F500 H T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on

                    H with no number after it will be interpreted as H0.

                    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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                    • Jorgeundefined
                      Jorge
                      last edited by

                      Thank you guys! I have a long print running, so I can't test it now, but it sounds like you found the reason for Fan 0 not to work.
                      Is the thermostatic function a modifiable setting in the online configurator? Or can I change this only manually?

                      And I still don't understand, why I can't run Fan 2 by sending this:
                      M563 P0 F2
                      M106 S255

                      Is this not what @dc42 said?

                      But sending this works:
                      M106 P2 S255

                      And setting Fan 2 in the web interface works as well.

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                      • Vetiundefined
                        Veti
                        last edited by

                        on the last page of the configurator for the fans (where you can add Fan2) there is a button for Thermostatic Control

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                        • Jorgeundefined
                          Jorge
                          last edited by

                          Ahh how could I not see!? So it really was a noob problem. Now it works. Thank you so much!

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