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    Max current on Duet 2 expansion header

    Duet Hardware and wiring
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    • chimaeragh
      chimaeragh last edited by

      What is the maximum current draw on the Duet 2 3.3v and 5v expansion header pins?

      Duet 2 Wifi, Ooznest Workbee CNC 1510

      droftarts infiniteloop 2 Replies Last reply Reply Quote 0
      • droftarts
        droftarts administrators @chimaeragh last edited by

        @chimaeragh See https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_2_WiFi_Ethernet_Hardware_Overview#operating-limits

        5V current limit: 2.0A total on 5V and 3.3v, including the internal current consumption (around 200-300mA), any PanelDue or other display, and any endstops/Z probes that draw significant power.

        Ian

        Cartesian bed-slinger with Duet 3 Mini 5+ WiFi : RRP Fisher Delta v1 with Duet 2 Maestro : TronXY X5S with Duet 2 Wifi (in progress)

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        • infiniteloop
          infiniteloop @chimaeragh last edited by

          @chimaeragh The expansion header pins are unbuffered, so you should not draw more than 10-20 mA from each.

          droftarts 1 Reply Last reply Reply Quote 0
          • droftarts
            droftarts administrators @infiniteloop last edited by

            @infiniteloop That's true for the I/O pins, but the 3.3V and 5V pins on the expansion header are direct to the voltage regulators. So it's the current the voltage regulators can support, once the draw of the rest of the system has been taken into account.

            Ian

            Cartesian bed-slinger with Duet 3 Mini 5+ WiFi : RRP Fisher Delta v1 with Duet 2 Maestro : TronXY X5S with Duet 2 Wifi (in progress)

            infiniteloop chimaeragh 2 Replies Last reply Reply Quote 0
            • infiniteloop
              infiniteloop @droftarts last edited by

              @droftarts Thanks for clarification 👆

              1 Reply Last reply Reply Quote 0
              • chimaeragh
                chimaeragh @droftarts last edited by

                @droftarts @infiniteloop Thanks for your help

                Duet 2 Wifi, Ooznest Workbee CNC 1510

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