On Wed, Mar 26, 2003 at 11:53:43AM +0100, Jörg Knitter wrote: One of my "some day" projects is a small, digital fan controller that's monitored and set through a serial port, operating up to 8 fans independently and sensing at 6 different points in the case.
Well, I haven't actually build a digital fan controller but
wrote a small daemon which evaluates temp readings from lm-sensors.
Currently two fans can be controlled independently via a serial port.
The actual driver circuit to switch the fans on and off is quit simple.
In "off" mode both fans run at low speed; voltage drop handle by 5W
resistor.
If anyone is interested I'll put the c-source and some pictures
to get an idea on my homepage...
Lars
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Lars Wessels Institute for Economic Policy Research (IWW)
University of Karlsruhe, Germany
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