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    Duet with Hotend breakout boards

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    • ericlmccormickundefined
      ericlmccormick
      last edited by

      I know the duet boards are designed to work with many different setups but many people use them for 3D printing. One of my biggest hassles is running all the wiring from my hotend back to the board. I would be nice it there was a variant that instead of placing everything on a single board, you have the components that go with a hotend on a breakout board. Then you would buy the main board the controls the stationary items and then add a breakout board to go along with each hotend you have. Then you would have a single ribbon cable that you could cut to length and have a clean setup. In addition to cleaning things up, this would reduce the hassle of breaking up wire bundles when you have a failed part. If you can make everything on the breakout board a screw down terminal, then it would save a lot of time trying to make and test short run cables, especially if those wires are only 5cm long. If you make a large system, you are not having to extend 7+ cables, just 1 ribbon cable. If you have a stepper motor upgrade you can just replace the breakout board and not the whole system. By having the extruder stepper controller on the breakout board you can make the main board cheaper instead of guessing how many the end user will want.

      The main board would consist of
      X, Y, Z1 Z2 steppers (4pin)
      X, Y, Z1 Z2 end stops (3 pin)
      H0/1 (bed/enclosure) Heater (2 pin)
      H0/1 Thermocouple (2pin)
      Case fan(3 pin)
      Enclosure fan(3pin)
      4 to 8 breakout headers

      Breakout board would have
      ExStepper - 4Pin
      ExHeater - 2Pin
      ExTemp - 2Pin
      X and Y endstop (redundant) - 3Pin
      ZSensor - 5pin (Pin + 3 Pin) for support BL Touch
      Part Fan - 2Pin
      Heater Fan - 2Pin

      You could also have a lighter weight breakout board that has just a stepper, heater, temp and fan for those with multiple tool heads or where end stops are not on the tool head.

      1 Reply Last reply Reply Quote 0
      • Luke'sLaboratoryundefined
        Luke'sLaboratory
        last edited by

        Duet 3 with CAN 1LC toolboards might be your ticket then. I'm sure there will be new, cost-effective units that include CAN as well that you can pair with the 1LC toolboards in the future. These boards break everything out into seperate units for "just" that component, and i'm sure there will be plenty of other variants that any person can use to build a super-flexible network of modules.

        As for just wiring concerns, - I'll self promote (mods, feel free to nuke if not cool) and offer my dumbboards as an option - I use them on my toolchanger build and I think they're neat!
        https://www.lukeslab.online/shop/dumbboardv1 -
        (Molex Microfit)
        https://www.lukeslab.online/shop/dumbboard (IDC ribbon cables)

        Luke
        http://lukeslab.online

        1 Reply Last reply Reply Quote 1
        • ericlmccormickundefined
          ericlmccormick
          last edited by

          That looks perfect. Now they just need to make a Duet 3 lite where the main board isn't doing as much of the heavy lifting.

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          • Luke'sLaboratoryundefined
            Luke'sLaboratory
            last edited by

            It definitely seems there's a good amount of opportunity moving forwards for splitting out the controller PCB's into whichever direction is needed! the difficult part will be deciding which configs to support first - I'm a big fan of triple-z lead screws so i'd definitely want 5 drivers just for the "main" board, but many only use one driver for z, so they'd want a smaller "main" board. So many configs!

            Luke
            http://lukeslab.online

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            • dc42undefined
              dc42 administrators
              last edited by dc42

              The Duet 3 Mini 5+ will support up to 7 drivers + CAN. https://forum.duet3d.com/topic/17409/duet-3-mini-5-initial-announcement

              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

              Luke'sLaboratoryundefined 1 Reply Last reply Reply Quote 2
              • Luke'sLaboratoryundefined
                Luke'sLaboratory @dc42
                last edited by

                @dc42 said in Duet with Hotend breakout boards:

                The Duet 3 Mini 5+ will support up to 7 drivers + CAN. https://forum.duet3d.com/topic/17409/duet-3-mini-5-initial-announcement

                Aha! I guess I wasn't up to date! Didn't know it also supported CAN, glad to see its been added 😄

                Luke
                http://lukeslab.online

                1 Reply Last reply Reply Quote 0
                • ericlmccormickundefined
                  ericlmccormick
                  last edited by

                  I forgot about triple Z!
                  Duet Mini announcement says it won't have CAN so it won't work with 1LC toolboard.
                  Need something where the main board + 1 toolboard is similar spec and priced of a Duet 2 wifi
                  Any chance of a header that gives the Duet2wifi and Duet2Maestro CAN ability so that the toolboard can be used on those systems?

                  Luke'sLaboratoryundefined ericlmccormickundefined T3P3Tonyundefined 3 Replies Last reply Reply Quote 0
                  • Luke'sLaboratoryundefined
                    Luke'sLaboratory @ericlmccormick
                    last edited by Luke'sLaboratory

                    @ericlmccormick
                    DC42 designed the board - The initial announcement says it does, but further updates down the chain post the revisions and says it now supports CAN (which is what I didn't know until re-reading the chain - thanks @dc42 )

                    Luke
                    http://lukeslab.online

                    1 Reply Last reply Reply Quote 1
                    • ericlmccormickundefined
                      ericlmccormick @ericlmccormick
                      last edited by

                      @ericlmccormick I see further down that CAN has been added 🙂

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

                        @ericlmccormick said in Duet with Hotend breakout boards:

                        Any chance of a header that gives the Duet2wifi and Duet2Maestro CAN ability so that the toolboard can be used on those systems?

                        No unfortunately not.

                        www.duet3d.com

                        1 Reply Last reply Reply Quote 0
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