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    Duet 3 6HC board for cnc

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    • weed2allundefined
      weed2all
      last edited by weed2all

      Just some findings about duet 3 board wired on a small 400x400x100 cnc...what I find till now...no matter the build in drivers can drive big stepper motors because the eliminating factor is the voltage input...on my cnc with leadscrew( 8mm lead) at 24v I can only drive the machine at 2400mm/min more than that my nema24 3.1 N.m. motor stalls..
      With 30v I could bump the speed up untill 3000mm/min...the testing didn't stop here...I have a few skr 1.3 boards with wifi module and I install reprap firmware on one of them and i use some chinese JMC 2M542 drivers along with 48v psu...and wow...what a speed jump...I can get 8000mm/min with the same motors...with all of this the next step I think is to sell my duet 3 board...as I bought it on purpose for this cnc...
      Hope someone find this usefull...

      I made 2 short videos with duet3/24v and skr1.3/48v

      Duet 3 2400mm/min or 40mm/sec
      https://youtube.com/shorts/ImlCNQgS-T8?feature=share

      Skr 1.3 and 2m542 drivers at 8000mm/min or 133mm/sec
      https://youtube.com/shorts/M7swwwzUWAw?feature=share

      https://www.thingiverse.com/weed2all/designs

      dc42undefined 1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @weed2all
        last edited by

        @weed2all what is the specification of your Nema 23 motors, and what steps/mm do your axes have?

        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

        weed2allundefined 1 Reply Last reply Reply Quote 0
        • weed2allundefined
          weed2all @dc42
          last edited by

          @dc42 I've testes 1/8 and 1/16...no much difference here...I've settle at 1/16 on most tests I made...
          Oriental Motors
          Model number : PK269 JDA
          Basic Step Angle : 1.8˚
          Holding Torque N·m : 3.1
          Current per Phase A/phase : 2.8
          Voltage V DC : 4.2
          Resistance per Phase /phase : 1.49
          Inductance mH/phase : 5.7

          https://www.thingiverse.com/weed2all/designs

          T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
          • T3P3Tonyundefined
            T3P3Tony administrators @weed2all
            last edited by

            @weed2all and what did you have the M92 command set to?

            www.duet3d.com

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            • weed2allundefined
              weed2all
              last edited by

              when test made with 1/8 I had M92 set to 200...
              On most tests at 1/16 I have my M92 set to X400 Y400 Z400

              https://www.thingiverse.com/weed2all/designs

              1 Reply Last reply Reply Quote 0
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