Elektuur (Elektor in English?) has published a wind speed & direction meter in their magazine this month. It uses only 2 hall sensors (and of course that thingie that has to turn round in the wind). Direction sensing is done with an algorithm, I believe it compares the strenght sensed by both hall sensors and then calculates the orientation.

You should check it out, it looks quite nice.


Website: http://members.lycos.nl/anthonyvh


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