User access to power supply?

Discussion in 'Macintosh Computers' started by jsnuff1, Feb 17, 2004.

  1. jsnuff1 macrumors 6502a

    Joined:
    Oct 4, 2003
    Location:
    NY
    #1
    Under OSX is it possible for the user to control certain parts of the power supply, or is the power supply totaly hareware dependent? The reason im asking is because im planning on adding a few neon lights to my G5 when i get it, and it would be cool if i could switch them on or off using the terminal or making a program that could make the lights flash etc.

    Id imagine this is possible for the G5 since the fans are connected to the power supply and are OS controlled.
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    I don't think the fans are connected directly to the PSU, but to a custom Apple fan controller unit that is connected to the logic board (probably via USB or maybe PCI). The logic board only gets power from the PSU it does not talk to it at all. Basically the PSU is not controllable in software.
     
  3. Nik_Doof macrumors regular

    Joined:
    Sep 15, 2003
    Location:
    St Helens, UK
    #3
    You'd probably be able to hack something together with a USB->Serial and some funky electronics, sure someones done it in the past but it wont look good. Check out all the PC modding sites, maybe fanbus controllers...
     
  4. Nik_Doof macrumors regular

    Joined:
    Sep 15, 2003
    Location:
    St Helens, UK
  5. superbovine macrumors 68030

    superbovine

    Joined:
    Nov 7, 2003
    #5

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