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    Duet 3 Mainboard 6HC - initial production run.

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    • T3P3Tonyundefined
      T3P3Tony administrators @Dougal1957
      last edited by

      @Dougal1957 Connectors and a 26way to 40 way cable for the SBC (compatible with a Raspberry Pi 3 & 4) will be provided.

      Also a SD card with the default image with DuetSoftwareFramework etc installed on it.

      www.duet3d.com

      Dougal1957undefined TLASundefined 2 Replies Last reply Reply Quote 5
      • Dougal1957undefined
        Dougal1957 @T3P3Tony
        last edited by

        @T3P3Tony said in Duet 3 Mainboard 6HC - initial production run.:

        @Dougal1957 Connectors and a 26way to 40 way cable for the SBC (compatible with a Raspberry Pi 3 & 4) will be provided.

        Also a SD card with the default image with DuetSoftwareFramework etc installed on it.

        Cheers for that

        1 Reply Last reply Reply Quote 0
        • TLASundefined
          TLAS @T3P3Tony
          last edited by

          @T3P3Tony
          Kind of curious why the Duet stayed with the 40 pin connector instead of matching the 26? Was this to enable backwards functionality if used without a SBC? Enable custom expansion? Just too many 40 pin connects on hand?

          A Former User? 1 Reply Last reply Reply Quote 0
          • A Former User?
            A Former User @TLAS
            last edited by A Former User

            @TLAS said in Duet 3 Mainboard 6HC - initial production run.:

            Kind of curious why the Duet stayed with the 40 pin connector instead of matching the 26?

            I think you'll find its the other way around, the connector was reduced from 40 to 26 presumably to save board space.
            (iircc the old duet 2 expansion is 50 pin(?), the new only needs 5 signals + ground and potentially 5v if so configured. however earlier raspberry boards aslo use a 26 pin connector, could be related)

            1 Reply Last reply Reply Quote 2
            • Dougal1957undefined
              Dougal1957
              last edited by

              yep the Duet has the 26 and the pi is 40

              1 Reply Last reply Reply Quote 0
              • JoergS5undefined
                JoergS5
                last edited by

                Aug 10th were some comments in this thread about to use other cables if necessary.

                1 Reply Last reply Reply Quote 0
                • gtj0undefined
                  gtj0
                  last edited by

                  @T3P3Tony Can we still use the link in the first post to order even though there might not be any available from the first run?

                  T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                  • T3P3Tonyundefined
                    T3P3Tony administrators @gtj0
                    last edited by

                    @gtj0 now just yet. I want to be able to say when the next batc will be available first

                    www.duet3d.com

                    1 Reply Last reply Reply Quote 0
                    • Dougal1957undefined
                      Dougal1957
                      last edited by

                      Tony is there any chance any more from this first batch will become available I know at least one guy who is desperate to jump on the band waggon. I seem to remember you saying you had kept some back to allow for failures during testing

                      Doug

                      T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                      • PastThePointundefined
                        PastThePoint
                        last edited by

                        I suppose there is no way to be notified when some stock is available? I have cash in hand for a D3 Mainboard, but missed the pre-order. I don't want to miss the chance to purchase on because I didn't check the website at the right time. So Doug told me to post a comment here as well.

                        Looking forward to this!

                        1 Reply Last reply Reply Quote 0
                        • T3P3Tonyundefined
                          T3P3Tony administrators @Dougal1957
                          last edited by

                          @Dougal1957 I expect we will do, will announce more next week.

                          www.duet3d.com

                          Dougal1957undefined 1 Reply Last reply Reply Quote 0
                          • Dougal1957undefined
                            Dougal1957 @T3P3Tony
                            last edited by

                            @T3P3Tony said in Duet 3 Mainboard 6HC - initial production run.:

                            @Dougal1957 I expect we will do, will announce more next week.

                            Thanks I will point him to this.

                            gtj0undefined 1 Reply Last reply Reply Quote 0
                            • gtj0undefined
                              gtj0 @Dougal1957
                              last edited by

                              @Dougal1957 said in Duet 3 Mainboard 6HC - initial production run.:

                              @T3P3Tony said in Duet 3 Mainboard 6HC - initial production run.:

                              @Dougal1957 I expect we will do, will announce more next week.

                              Thanks I will point him to this.

                              Tell him to get to the back of the line. 🙂

                              1 Reply Last reply Reply Quote 1
                              • gtj0undefined
                                gtj0
                                last edited by

                                It's a little hard to tell from the renderings and pics but can someone confirm that the 26 pin connector polarity notch faces in towards the MPU?

                                A Former User? 1 Reply Last reply Reply Quote 0
                                • A Former User?
                                  A Former User @gtj0
                                  last edited by

                                  @gtj0 said in Duet 3 Mainboard 6HC - initial production run.:

                                  It's a little hard to tell from the renderings and pics but can someone confirm that the 26 pin connector polarity notch faces in towards the MPU?

                                  Did you see the new Wiki? https://duet3d.dozuki.com/Wiki/SBC_Setup_for_Duet_3

                                  gtj0undefined 1 Reply Last reply Reply Quote 0
                                  • gtj0undefined
                                    gtj0 @A Former User
                                    last edited by

                                    @bearer Yeah but you can't tell in those pics because the cable exits the IDC pins to the left (inwards) but then loops back through the strain relief towards the right and out. I can't see the notch.

                                    1 Reply Last reply Reply Quote 0
                                    • A Former User?
                                      A Former User
                                      last edited by

                                      @gtj0 I suppose its not given the notch is on the left hand side in those pictures although the red stripe indicating pin 1 would suggest that, which side the cable exits shouldn't affect pin 1 and the notch.

                                      gtj0undefined 1 Reply Last reply Reply Quote 0
                                      • gtj0undefined
                                        gtj0 @A Former User
                                        last edited by

                                        I've learned through bitter experience not to take for granted the relationship between the notch and pin 1. About 10 years ago I had a local company make me 100 10-pin cables and they didn't bother to follow my spec. Apparently 3 different people made the cables so I got 3 different orientations.

                                        Anyway, I'm experimenting with different cable lengths and right now I'm getting great results with a 300mm cable at a 1MHz clock rate but only if I alternate the signal lines with grounds. In fact it still looks great at 5HMz. I was toying with using some twisted pair as well but twisted pairs aren't all that effective in unbalanced circuits.

                                        T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                                        • T3P3Tonyundefined
                                          T3P3Tony administrators @gtj0
                                          last edited by

                                          @gtj0 the 26 way header notch goes in, towards the center of the Duet 3 mainboard. The Duet 3 has a keyed header.

                                          www.duet3d.com

                                          gtj0undefined 1 Reply Last reply Reply Quote 0
                                          • gtj0undefined
                                            gtj0 @T3P3Tony
                                            last edited by gtj0

                                            Perfect. Thanks @T3P3Tony And what are you doing up so late?

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