[Nut-upsuser] 24V DC ATX PSU with limited UPS functionality over USB

[Michelle Konzack]

Hello Jean,

Am 2008-03-13 22:50:43, schrieb Jean Delvare:
> Hi Michelle,
> Given that you are working on a PSU and not a UPS, I am not sure that
> nut is the best tool to interface with. Wouldn't it make more sense to
> add one or more hardware monitoring chips in your PSU and connect them
> to the motherboard's SMBus, and use a hardware monitoring driver in the
> kernel to monitor all the values you are interested in? There are many
> popular chips already supported by the Linux kernel, which can monitor
> several voltages, temperatures and/or fans. And then there's a library
> for applications to access the data easily.
> 
> Just my 2 cents of course, depends on what you want to do exactly.

As Charles has already explained, there are not very much mainboards to
let external hardware access there I²C/SMBus...

The only possibility I have seen, is to build a very small PCI-Card with
a I²C-Master or if the existing I²C bus is availlable, using a I²C Switch
or Multiplexer...  But I do not realy like this idea even if I have build
a working I²C PCI card with a 8 channel switch using Philips/NXP chips.

Note:   I need it for some experiments and development...

Thanks, Greetings and nice Day
    Michelle Konzack
    Systemadministrator
    24V Electronic Engineer
    Tamay Dogan Network
    Debian GNU/Linux Consultant


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