Need a solution to stop a fan completely, programmatically

Discussion in 'DIY Server and Workstation Builds' started by servethebalcony, May 22, 2018.

  1. servethebalcony

    servethebalcony New Member

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    So I have my server at the balcony of an apartment building. Saves me looads of money. But. During the winter, the temperature can drop below freezing. I am, however, able to keep the temp inside an enclosure stable at 15C/59F — wrote a script for that. But this is possible only if the case fans are stopped completely, so that the heat only dissipates through the walls. Supermicro IPMI doesn’t allow for full stop, that is:
    Code:
    ipmitool raw 0x30 0x70 0x66 0x01 0x01 0x00<---
    doesn’t work, and
    Code:
    ipmitool raw 0x30 0x70 0x66 0x01 0x01 0x01<---
    stops the fan but keeps some voltage on it — and eventually burns it, as it did to my brand new Arctic.

    Need a solution.
     
    #1
    realbosselarsson likes this.
  2. Stephan

    Stephan IT Professional

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    How about USB controlled relais that cuts power to Vcc of the fan. After reset, fans will be running, but after service daemon detects low temperature it will cut power by talking to the relais controller using /dev/ttyUSB0 or similar.
     
    #2
  3. darklight

    darklight New Member

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  4. LaMerk

    LaMerk New Member

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  5. Nizmo

    Nizmo Member

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