Here is the paddlewheel. Its a vacuform plastic housing with an acylic paddlewheel. The rod is the same carbon fiber that I used for the anemometer. I already have all the sensors working with the arduino so now all I have to do is put the pieces together.
The question I’ve been wrestling with is: How do you average reading from the wind vane? Say you have 5 readings at varying degrees (from 0-360). For example; 10, 5, o, 355, 340. A simple average will be wrong because the readings wrap around a circle… Glen addressed this, but there are special cases that don’t work in his solution. For instance when you have a reading like: 5,5,5,270,270.