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    Duet 3 6hc and expansion 3hc 12v io-7-9 and 6-8 no redout

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    • jsinicroundefined
      jsinicro
      last edited by

      @phaedrux Pump and Fan are from the e3d Aqua cooling kit each on is on a separate expansion board and they are connected to the 4pin out 3 and 4 they only use the positive and negative pins. They work, but when testing the 2 pin connectors out 6,7,8 I do not get the 12Volt that I thought I would. The main board is powered from a 24 volt supply which the 2 expansion boards also use.

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      • jsinicroundefined
        jsinicro @jsinicro
        last edited by

        @jsinicro IMG_1899[1].JPG

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        • jsinicroundefined
          jsinicro @jsinicro
          last edited by

          @jsinicro IMG_1898[1].JPG

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          • jsinicroundefined
            jsinicro @jsinicro
            last edited by

            @jsinicro 40e687f3-6c83-4697-ab15-5be160caca38-image.png

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            • jsinicroundefined
              jsinicro @jsinicro
              last edited by

              cade37a3-95ea-48eb-9174-67e295fe8166-image.png

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              • jsinicroundefined
                jsinicro @jsinicro
                last edited by

                @jsinicro 20ca7ccc-4fc1-42ee-b4a5-ad8f57b3e9c9-image.png

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                • jsinicroundefined
                  jsinicro @jsinicro
                  last edited by

                  @jsinicro 81b33279-4816-4820-8268-1b5130a419d3-image.png

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                  • jsinicroundefined
                    jsinicro @jsinicro
                    last edited by

                    @jsinicro still can't figure out why I am getting 12 volts out of the 4 pin header out 3 and 4 where the fan and pump are connected but on the 2 pin header out 6-8 not getting 12V? the picture above show the connections this is the expansion 3hc.

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                    • jsinicroundefined
                      jsinicro
                      last edited by

                      @jsinicro this is consistent the same results on the main board

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                      • jsinicroundefined
                        jsinicro @jsinicro
                        last edited by

                        @jsinicro Just wanted to point out the wiring diagram for the 3HC is labeled wrong taking there is no 2-pin out 7- out-9. it has to be according to the wiring picture out out-6,7,8
                        from the documentation:
                        Medium current/ 2 wire fan outputs
                        2-pin KK headers labelled OUT7 thru OUT9: these are intended for fans. Maximum recommended current 2.5A each. Flyback diodes are built-in to these outputs. (see note on 12V max current below)

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                        • jsinicroundefined
                          jsinicro @jsinicro
                          last edited by

                          @jsinicro new question?
                          the 2-pin KK headers, well there is only one on the 3HC this puts out v-fused which is 24 volts verified that, but what are the maximum amps?

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                          • jsinicroundefined
                            jsinicro @jsinicro
                            last edited by

                            @jsinicro that's all the documentation says:
                            2-pin KK headers labelled GND and V+: This is for powering an always-on fan or similar.

                            The documentation for the pumps say 823mA I have 2 but they are rated at 12V the set up that I have when I turn on power I have to unplug and plug one of them back in in order to have them working, which is not right as they are on 2 separate 3HC boards.

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                            • jsinicroundefined
                              jsinicro @jsinicro
                              last edited by

                              @jsinicro I will use the 24V and step it down to 12V

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                              • jsinicroundefined
                                jsinicro @jsinicro
                                last edited by

                                @jsinicro I suppose I could use the JST high amps step that down and connect both

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