Wind directional Windmill

We have designed a windmill that automatically changes the position of the blades based on the direction of a weathervane. This allows for the windmill to generate energy more efficiently and to, in our case, charge a phone battery. Using an Arduino Microcontroller to detect direction and rotate the fan blades using basic motors, we were able to design a system for a table-top scale windmill that generates a practical use of renewable energy.