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    12v 4 Pin PWM Fan on Duex5 w/ 24 VIN?

    Duet Hardware and wiring
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    • kraegar
      kraegar last edited by

      I have some 12v fans I'd like to use with the Duex5. I have a 24v PSU. I switched the V FAN Jumper Select to 12v. However, my fans are 4 pin. I can pull the vin / gnd for the fans, but there's no "always on" to connect them to. (I've also split out the PWM connector, and can connect it to one of the PWM fan pins).

      Is it possible to use these in this configuration?

      Co-Creator of the RailcoreII CoreXY printer
      https://www.thingiverse.com/thing:2407174

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      • dc42
        dc42 administrators last edited by

        Try connecting the red wire to the VFAN side of the fan connector, the PWM wire to FAN- on the same connector, and the black wire to ground. You can pick up ground from an endstop connector or from the 5V external power connector.

        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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        • kraegar
          kraegar last edited by

          Having no luck at all with them. Tried inverting the port as well, no change.

          Co-Creator of the RailcoreII CoreXY printer
          https://www.thingiverse.com/thing:2407174

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          • kraegar
            kraegar last edited by

            Ok, my fault. Didn't have the 12v_EN jumper on. Only the 12V on the fan select.

            Connecting as you recommended and inverting the PWM works a charm. Thanks!

            Co-Creator of the RailcoreII CoreXY printer
            https://www.thingiverse.com/thing:2407174

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