wind instrument

Weather instrument with anemometer and wind vane.
Made with 4 printed parts.

- there is a 5mm screw attached on the bottom part (40 mm long in my setup).
- a 608zz bearing is fixed between rotor and cups with 3mm screws.
- a 9mm magnet(from a bicycle odometer) is inserted on the rotor
- the wind speed is calculated with a reed switch

- for the wind vane, a continuous single turn potentiometer is used

Use with arduino as described here:
http://cactus.io/hookups/weather/anemometer