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    Duet 3 Mainboard 6HC - initial production run.

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    • dc42undefined
      dc42 administrators @JoergS5
      last edited by dc42

      @JoergS5 said in Duet 3 Mainboard 6HC - initial production run.:

      There was a blog some time ago how to destroy a Duet 2, information how to avoid it. I would find it helpful to have the same information for the new Duet 3: what should one avoid in any case (wrong voltage at pin x/connecting pin x with y, connection cable etc.). It can be a short list which can be print out and hang it over the board while one wires it up. A cheat sheet with a caution list and the Duet 3 board as image with the dangerous places marked red.

      We've tried to make the Duet 3 even tougher than Duet 2 by including additional protection mechanisms. In particular, it's designed to survive a short between the external +5V and/or +3.3V rails and +24V. But I haven't tested these protection mechanisms yet, because Duet 3 boards are too scarce to risk writing off.

      One thing we didn't include protection against is reverse polarity VIN. So be sure to get the polarity right! If you get it wrong, then the board may survive, depending on the short circuit current of the power supply. I "tested" reverse polarity a couple of weeks ago and the board was OK afterwards.

      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

      JoergS5undefined 1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @mundsen
        last edited by

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

        Does the Duet3/Raspberry support USB Camera (connected to the PI) for integration in the Web interface?
        I have a Logitech 1080P USB camera - possible to use?

        I'm not sure whether this is implemented yet, but if not then it certainly will be. We chose a dedicated SPI bus for connecting the Pi to the Duet so as to keep the USB subsystem free for high bandwidth devices such as cameras.

        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 1
        • mundsenundefined
          mundsen
          last edited by

          One more thing - should I get a speaker for my PI? Does the web server use sounds for warnings, autolevel ready..?

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

            @mundsen it does not currently

            www.duet3d.com

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

              @mundsen

              A quick Google....

              returned the following result.

              USB Camera on a Rpi

              mundsenundefined 1 Reply Last reply Reply Quote 0
              • mundsenundefined
                mundsen @A Former User
                last edited by

                @CaLviNx I know you can use a USB camera in combination with the pi - but the web server need to support/use it to get video in the duet web interface

                1 Reply Last reply Reply Quote 0
                • JoergS5undefined
                  JoergS5 @dc42
                  last edited by

                  @dc42 Thank your for your information about what to avoid.

                  1 Reply Last reply Reply Quote 1
                  • NoSkillzEngineerundefined
                    NoSkillzEngineer
                    last edited by

                    Was it an RJ11 port??? Whoops! Clearly I didn't look at it particularly closely 😆

                    My bad!!!

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

                      The Raspberry Pi 4 has an official current supply of 5.1 volt and 3 ampere. According to https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Wiring_Diagram I can empower it by the 26 pin cable also (the note for the 26 pin header in the diagram), but is it sufficient for the Pi 4 or should I better use the official supply?

                      And if I shall use a separate supply, I suspect I have to connect the grounds?

                      Dougal1957undefined 1 Reply Last reply Reply Quote 0
                      • Dougal1957undefined
                        Dougal1957 @JoergS5
                        last edited by

                        @JoergS5 said in Duet 3 Mainboard 6HC - initial production run.:

                        The Raspberry Pi 4 has an official current supply of 5.1 volt and 3 ampere. According to https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Wiring_Diagram I can empower it by the 26 pin cable also (the note for the 26 pin header in the diagram), but is it sufficient for the Pi 4 or should I better use the official supply?

                        And if I shall use a separate supply, I suspect I have to connect the grounds?
                        Mine is running quite happily of the 26 way cable mind it is only idling at the moment but has been switched on for about 2-3 days constantly

                        JoergS5undefined 1 Reply Last reply Reply Quote 0
                        • JoergS5undefined
                          JoergS5 @Dougal1957
                          last edited by

                          @Dougal1957 thank you for confirmation.

                          1 Reply Last reply Reply Quote 0
                          • mundsenundefined
                            mundsen
                            last edited by

                            Duet_3_01.jpg

                            First initial test

                            Duet 3 6HC
                            Raspberry Pi 4 2GB
                            7 inch 1024x600 capacitive touch LCD
                            24V PSU
                            SD card that came with the Duet

                            All seems to work fine 🙂
                            Next, I`ll connect steppers, fans, configure WiFi/Ethernet..

                            1 Reply Last reply Reply Quote 1
                            • mundsenundefined
                              mundsen
                              last edited by mundsen

                              I got a question about duet 3 and pi - is the code transfered to the duet before the print Job starts or is it controlled real time by the pi during the print?

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

                                Should the underside of the drivers and mosfets be completely soldered to the board or is there enough contact to dissipate the heat the way they are?
                                IMG_20190926_142914.jpg

                                dc42undefined 1 Reply Last reply Reply Quote 0
                                • wilrikerundefined
                                  wilriker @mundsen
                                  last edited by wilriker

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

                                  I got a question about duet 3 and pi - is the code transfered to the duet before the print Job starts or is it controlled real time by the pi during the print?

                                  It is controlled real time. This also allows to implement plug-ins to do arbitrary modifications while the print is in progress. For example I have implemented a first version of an Object Skipper, i.e. a plug-in that is given the information on how to identify a certain object in the GCode (many slicers put specific comments in the GCodes) and then will filter out any commands related to this object (or multiple).

                                  This allows for a print to continue where you have multiple objects on the platform but printing fails for whatever reason for one of them.

                                  I will probably release this early next week.

                                  Manuel
                                  Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
                                  with probably always latest firmware/DWC (incl. betas or self-compiled)
                                  My Tool Collection

                                  1 Reply Last reply Reply Quote 5
                                  • A Former User?
                                    A Former User
                                    last edited by

                                    Much ❤
                                    @wilriker said in Duet 3 Mainboard 6HC - initial production run.:

                                    Fur example I have implemented a first version of an Object Skipper

                                    1 Reply Last reply Reply Quote 0
                                    • dc42undefined
                                      dc42 administrators @gtj0
                                      last edited by

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

                                      Should the underside of the drivers and mosfets be completely soldered to the board or is there enough contact to dissipate the heat the way they are?
                                      IMG_20190926_142914.jpg

                                      The connectors should be soldered, but not the thermal vias under the stepper drivers and mosfets.

                                      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
                                      • gtj0undefined
                                        gtj0
                                        last edited by

                                        So the partially filled vias are OK?

                                        dc42undefined 1 Reply Last reply Reply Quote 0
                                        • dc42undefined
                                          dc42 administrators @gtj0
                                          last edited by

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

                                          So the partially filled vias are OK?

                                          Yes.

                                          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
                                          • Cataundefined
                                            Cata
                                            last edited by

                                            Will there be a variant that does not use a raspberry?

                                            gtj0undefined 1 Reply Last reply Reply Quote 0
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