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    How do I assign a new part cooling fan?

    Duet Hardware and wiring
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    • maroonds
      maroonds last edited by

      Hey! I'm having issues with my duet maestro firmware. My part cooling fan is connected to the FAN2 pin, but I'm only able to control it through this g-code: M106 P2 S255
      I would really like to have the slicer set the fan speed.
      I think this is the crucial part of my config.g:

      ; Fans
      M950 F3 C"e1heat"
      M106 P3 H1 T35 S1
      M950 F2 C"fan2" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P2 I0 C"5015" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off

      ; Tools
      M563 P0 D0 H1 F2 ; define tool 0
      G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
      G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

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      • Phaedrux
        Phaedrux Moderator last edited by

        The part cooling fan is usually Fan0 so that slicers that are unaware of multiple fan numbers can control it with simple M106 commands.

        So either set your slicer to use fan2, or reconfigure to use F0, etc instead.

        maroonds 1 Reply Last reply Reply Quote 1
        • maroonds
          maroonds @Phaedrux last edited by

          @Phaedrux How do I set up my slicer fan?

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          • Phaedrux
            Phaedrux Moderator last edited by

            Which slicer are you using?

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

              @Phaedrux Prusa Slicer

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              • Phaedrux
                Phaedrux Moderator last edited by

                I don't think PrusaSlicer/Slic3r has the option of specifying a fan number, but you could use a post processing script to replace M160 with M106 P2, or open the gcode file in a text editor and do a find and replace.

                https://manual.slic3r.org/advanced/post-processing
                https://github.com/slic3r/Slic3r/wiki/Writing-post-processing-scripts
                https://reprap.org/forum/read.php?263,847419

                Or if that just seems far too complicated, you could just change your fan configuration to use F0 instead of F2

                M950 F0 C"fan2" Q500
                M106 P0 I0 C"5015" S0 H-1
                M563 P0 D0 H1 F0
                

                I think that should allow M106 commands without a P# to work.

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

                  @Phaedrux I accidentally shorted my F0 port. That's why I'm having these issues in the first place. Thanks anyways:)

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

                    No no. It doesn't change the physical fan port. Just the fan number you're assigning to it.

                    C"fan2" refers to the port you're using. F0 makes it the default fan.

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

                      @Phaedrux Are you sure? Because I updated my config to:
                      ; Fans
                      M950 F3 C"e1heat"
                      M106 P3 H1 T35 S1
                      M950 F0 C"fan2" Q500
                      M106 P0 I0 C"5015" S0 H-1

                      ; Tools
                      M563 P0 D0 H1 F0
                      And the fan still only activates when I type: M106 P2 S255

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

                        @maroonds said in How do I assign a new part cooling fan?:

                        Are you sure?

                        No, but I really thought that should work.

                        What firmware version are you using? Can you post your full config?

                        maroonds 1 Reply Last reply Reply Quote 1
                        • maroonds
                          maroonds @Phaedrux last edited by

                          @Phaedrux Here's my config: https://pastebin.com/ePVM5nhm
                          I'm on the latest RR3 firmware.

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

                            @maroonds said in How do I assign a new part cooling fan?:

                            I'm on the latest RR3 firmware.

                            Which version specifically?

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

                              @Phaedrux Board: Duet Maestro 1.0
                              Firmware: RepRapFirmware for Duet 2 Maestro 3.0 (2020-01-03b3)

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                              • dc42
                                dc42 administrators last edited by

                                In RRF 3.0 for the Maestro, fans 0, 1 and 2 are pre-allocated to "fan0", "fan1" and "fan2". So if you want to use different assignments such as:

                                M950 F0 C"fan2" Q500

                                then you need to remove the existing assignment to "fan2" by doing this first:

                                M950 F2 C"nil"

                                In RRF 3.01 the default fan assignments have been removed,

                                maroonds 1 Reply Last reply Reply Quote 1
                                • maroonds
                                  maroonds @dc42 last edited by

                                  @dc42 said in How do I assign a new part cooling fan?:

                                  nil

                                  Like this? ; Fans
                                  M950 F3 C"e1heat"
                                  M106 P3 H1 T35 S1
                                  M950 F2 C"nil" Q500
                                  M106 P2 I0 C"5015" S0 H-1

                                  ; Tools
                                  M563 P0 D0 H1 F0
                                  It's still not working.. I tried upgrading my firmware but I get this error: M997 S0
                                  Error: In-application programming binary "DuetMaestroIAP.bin" not found

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

                                    @maroonds said in How do I assign a new part cooling fan?:

                                    @dc42 said in How do I assign a new part cooling fan?:

                                    nil

                                    Like this? ; Fans
                                    M950 F3 C"e1heat"
                                    M106 P3 H1 T35 S1
                                    M950 F2 C"nil" Q500
                                    M106 P2 I0 C"5015" S0 H-1

                                    No, you need to use M950 F2 C"nil" (to free up pin "fan2") and then M950 F0 C"fan2" Q500. Then you can use M106 P0 I0 C"5015" S0 H-1.

                                    ; Tools
                                    M563 P0 D0 H1 F0
                                    It's still not working.. I tried upgrading my firmware but I get this error: M997 S0
                                    Error: In-application programming binary "DuetMaestroIAP.bin" not found

                                    You will find that file in the 3.0 release page on github.

                                    maroonds 1 Reply Last reply Reply Quote 1
                                    • maroonds
                                      maroonds @dc42 last edited by

                                      @dc42 said in How do I assign a new part cooling fan?:

                                      M106 P0 I0 C"5015" S0 H-1

                                      Now it's working, thanks!

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