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    Cnc breakout board for 4 axis milling machine.

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    • bigdaveundefined
      bigdave
      last edited by

      Also, to clarify my intent.

      I’d like to get a complete kit from you that will allow me to build a multi use control panel that will allow me to move my motors between a number of machines. Mill, lathe, router, 3D printer, scanner ect.

      I’d like to be able to setup machine profiles in the software to drive the different systems.

      I’ve probably gone overkill on the (350w x4), drivers and motors and installed them into a mobile cabinet.

      I’ll be installing breakers, surge protection and line filters into the panel.

      Your system seems to be very intuitive and from what I’ve seen if it could be done then you’d be the people doing it.

      I’m happy to incorporate anything you think appropriate to ensure a good outcome.

      Thanks and regards

      Dave

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      • bigdaveundefined
        bigdave @jay_s_uk
        last edited by

        @jay_s_uk

        That’s ok, I’m not in a rush. In the meantime I want to keep building so I’d like engage with you on the rest of the system so I get it right.

        Can that be done offline? It would just be easier is all.

        mccaw.d@gmail.com

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        • dc42undefined
          dc42 administrators
          last edited by

          Those stepper drivers need step and direction signals with a minimum signal level of 5V. As we don't yet have a Duet 3 board that supports external drivers, the best solution we can currently offer is Duet 2 WiFi or Duet 2 Ethernet, plus the Expansion Breakout Board.

          We're planning a Duet 3 main board to support external drivers, but it probably won't be available this year.

          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

          bigdaveundefined 1 Reply Last reply Reply Quote 0
          • bigdaveundefined
            bigdave @dc42
            last edited by

            @dc42
            Is the duet 3 capable of driving the motors directly?

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

              @bigdave not the ones you've linked to

              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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              • bigdaveundefined
                bigdave @jay_s_uk
                last edited by

                @jay_s_uk
                I still have to install Ballscrews an mount my motors so I might try to wait it out

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

                  @bigdave said in Cnc breakout board for 4 axis milling machine.:

                  Is the duet 3 capable of driving the motors directly?

                  Duet3 6HC is rated for 4.45A RMS (6A peak) and the motors are 6A, so you'd not make full use of the motors, but unless the low resistance pr coils is a problem it ought be possible to drive them at 4.45A.

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                  • jay_s_ukundefined
                    jay_s_uk
                    last edited by

                    Except they have closed loop feedback which couldn't be used, which IMO would be a bit of a waste

                    Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

                      @jay_s_uk said in Cnc breakout board for 4 axis milling machine.:

                      closed loop

                      d'oh! yes!

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                      • mikedahlgrenundefined
                        mikedahlgren
                        last edited by

                        @dc42 Looking forward to doing something similar, is there any update on the Duet 3 with external drivers might be available? Or should I buy a Duet 3 mini with 3 1XD's?

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                        • dc42undefined
                          dc42 administrators
                          last edited by

                          I'm sorry, we don't yet have an update on when Duet 3 with external driver support on the main board will be available. We are aware that a number of users are waiting for this.

                          The Duet 3 Mini can in theory support two external drivers using a breakout expansion board (as well as further external drivers using the 1XD expansion board).

                          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

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                          • tenajaundefined
                            tenaja @bigdave
                            last edited by

                            @bigdave
                            How is your project coming?

                            I'm surprised you are using ball screws and a control without backlash compensation. Do you just need fast, without concern for precision? Is there something else drawing you to duet?

                            If duet had backlash comp, I'd put it on one (or more) of my desktop machines, but without it, I'm sticking with the existing LinuxCNC. I suppose one could use a Marlin or Beagle board, but I haven't used either yet, so I don't have a favorite or a reason to migrate. (Like standardization.)

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