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    BedHeat LED flashes while heating?

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    Duet Hardware and wiring
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    • darookeeundefined
      darookee
      last edited by

      I just installed the DuetWifi and so far everything works OK.

      I'm using an ATX PSU and just started to PID tune the bed (is this even neccessary?) It currently heats up and while doing so the red BedHeat-LED flashes and the PSU makes a clicking noise. Is that how it should be or is the PSU not supplying enought current?

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      • tomasfundefined
        tomasf
        last edited by

        I think the LED flashing is normal. The LED is connected to the heater signal, so whenever the heater is turned on, the LED is too. So when the bed is heated with PWM, so is the LED. Not sure why your PSU clicks, though.

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        • dc42undefined
          dc42 administrators
          last edited by

          Bed PWM uses a low frequency (10Hz) so as to be compatible with all types of SSR. That's why the bed heat LED flashes. Your PSU clicking is probably a magnetic effect in the transformer as it responds to the change in load.

          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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          • darookeeundefined
            darookee
            last edited by

            It worked alright, it heated up, so I won't be worried. Thanks for the answers! 🙂

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