Anemometer

[Lars65]

Hi, have printed an anemometer, to measure wind speed.
I use 8 magnest for one lap, and a hall effect sensor to count pulses. So, 8 pulses per lap.
How do I write the code for arduino, to use the pulses?
What I want to know is the number of pulses per second, and devide it with the
circumference.

[m26872]

Perhaps something similar to the power- or water flow pulse sensor example sketches?
https://www.mysensors.org/build/pulse_power
https://www.mysensors.org/build/pulse_water