Power supply monitoring in Linux?

[Jim Kuzdrall]

On Friday 09 November 2007 10:08, Paul Lussier wrote:
> Bill McGonigle <bill at bfccomputing.com> writes:
> > If you strike out with the onboard stuff and really need it, one of
> > the booths at LinuxWorld a year or two ago had smart power strips
> > with SNMP.  I assume there was some kind of trapping on electrical
> > characteristics.
>
> We've got them.  APC sells them.  That is not an option.  We need to
> monitor it in the OS to detect the failure on one of the redundant
> power supplies (it would be tough to detect the failure the second :)
> so we can send an alert.
>
> This is for an embedded Linux device resold to customers, who,
> ideally, use UPSes and do their own monitoring at the power-main
> level.

    I should have been following the thread more closely, but I suppose 
that you have disallowed any hardware solutions.

    If not, there is an easy way to insert a small board between the 
power supplies with a fly lead off to some interrupt node on the 
motherboard.  All plug-in stuff, no soldering or trace cutting.  Costs 
money, though.

Jim Kuzdrall