Counter Circuit for model wind turbine shaft.

Thread Starter

windfarm

Joined Aug 12, 2010
1
I have a built a model wind turbine and would like to count the speed of the shaft, it will be rotating at about 1000rpm-1500rpm.
I will mount a disk on the shaft with a cut slot and place a slotted optical sensor, this is all I know I am not sure about the circuit and how complex it will be to display the speed of the shaft. I have little experience in this, but I would love a cheap and simple circuit that would fit on a 3 x 3 board.
thanks
 
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