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    Duet Wifi, 5V

    Duet Hardware and wiring
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    • lolorc
      lolorc last edited by

      Hi,

      I'm about to connect 5V fans to my duet wifi board,
      As I'm not sure if my fans really are brushless ones so I'm going to use flyback diodes.
      I guess there're only required when for PWM fans and not needed for always on fans, or would the buck converter be require the protection ?

      Another question about the buck converter, it's rated for 2A, would you discourage using it to also power a raspberry pi with its camera ?

      TIA

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      • dc42
        dc42 administrators last edited by

        If they are always on fans then even a brushless brushed fan doesn't need a flyback diode.

        How much current does a RPi + camera take? If you already have a PanelDue, don't forget to allow for its current draw as well.

        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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        • lolorc
          lolorc last edited by

          @dc42:

          If they are always on fans then even a brushless fan doesn't need a flyback diode.

          Ok, I guess you mean even a brushed fan doesn't need the flyback diode. don't you ?

          @dc42:

          How much current does a RPi + camera take? If you already have a PanelDue, don't forget to allow for its current draw as well.

          looks like my old rpi + camera + cpu intensive tasks could draw next to 1A.
          To be on the safe side, I guess I'll use an extra dc-dc switching converter, must have some lying in a drawer.

          Thanks

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          • dc42
            dc42 administrators last edited by

            Yes I meant brushed.

            Drawing 1A from the internal 5V regulator should be OK.

            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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