Date: Fri, 03 Jan 1997 08:51:07 -0700 From: Sean Kelly <kelly@fsl.noaa.gov> To: spork <spork@super-g.com> Cc: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>, freebsd-hackers@freefall.freebsd.org Subject: Re: advice sought - Quantum 2GB Atlas broken Message-ID: <32CD2AEB.CCF@fsl.noaa.gov> References: <Pine.BSF.3.95.970102183826.18348A-100000@super-g.inch.com>
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spork wrote: > Now I just have to find > a way to detect when the CPU fan dies... Those of us tinkering with FreeBSD home automation have a solution. We can run a three-wire bus with Dallas Semiconductor DS1820 temperature sensors attached; the other end plugs into a small component box and into a serial port. The sensors can be placed on key system components (cpu, drives, power supply) and report their temperatures when queried. When the temperature exceeds a certain limit, an X10 appliance module is used to cut power to the system (after a clean shutdown, hopefully). X10 can be run over a serial port or using the built-in /dev/tw driver. If the X10/temperature sensor host itself is running hot, it can shutdown every system and then itself. See http://freebsd.org/~fsmp/HomeAuto/HomeAuto.html for more info. -- Sean Kelly NOAA Forecast Systems Laboratory kelly@fsl.noaa.gov Boulder Colorado USA http://www-sdd.fsl.noaa.gov/~kelly/
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