Thingiverse
Windmeter for Android by f2knpw
by Thingiverse
Last crawled date: 4 years, 7 months ago
Here is the first test of my Android Windmeter.
It works with two small magnets attached to the anemometer axis and rotating above the smartphone's magnetometer.
This produces a very small fluctuation of the magnetic field. When applying a fast fourier transform you can get the rotation speed.
Then the App allows to calibrate the speed using the GPS and display it on a gauge.
Well, see it into action :https://www.youtube.com/watch?v=jA16slSEuuM
It works with two small magnets attached to the anemometer axis and rotating above the smartphone's magnetometer.
This produces a very small fluctuation of the magnetic field. When applying a fast fourier transform you can get the rotation speed.
Then the App allows to calibrate the speed using the GPS and display it on a gauge.
Well, see it into action :https://www.youtube.com/watch?v=jA16slSEuuM