Use Duet to control Power Supply noisy fan [SOLVED]



  • Hello,

    Is it possible to have a similar control that we can have with the hot-end fan, to turn on the fan at a set temperature, and control the fan of my power supply to only turn when needed?

    I bought a nice MeanWell power supply that is noisy as #$%@#&&%!43 Looking for ways to silence it I found people who bought some fan control systems (automatic or manual...) to manage this issue. But they are expensive and I have thermistors laying around and a Duet 😄

    Would be possible to control that fan?


  • administrators

    Yes, if you have a spare thermistor input and a spare and fan output on the Duet.



  • @dc42 So I just configure it as the thermal controlled hotend fan would?

    Thak you very much!


  • administrators

    @brunofporto said in Use Duet to control Power Supply noisy fan:

    @dc42 So I just configure it as the thermal controlled hotend fan would?

    Thak you very much!

    Yes, that's right.



  • @brunofporto I have one too, 600W. The fan isn't able to be controlled by law to reduce risk. I personally wouldn't assume I know better to think that an overheating PSU can be recovered by turning on a fan. Just my unsolicited $0.02.



  • @gnydick Well.... That is true.... Thank you!!!

    But I'll take your comment seriously and first look for a more silent alternative with the same size and flow rate.

    If I do not find a good alternative I'll add a thermal fuse inside the power supply that will cut the AC power for good if it overheats. The power supply is rated to work within environments with up to 60C. If I configure the fan to turn on at 50C of inside temperature and considering that the surrounding is at nice 23C due to air conditioning it should be fine.

    Better noisy than a fire starter for sure.


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