Adding some more stuff is always fun.
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Inspired by a recent blog-post on dangerousprototypes.com, I chose to improve the fan-monitoring. The unmodified device only monitors fan voltage, which is close to useless.
With the addition of a current-sense shunt resistor (1 Ohm, very easily done), one can measure the fan-current, which is not perfect, but might be expanded to true commutation-detection (true fan-speed).
This is just the first part, simple current-monitoring. It works nicely.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
