1. Not so easy it seems…
Windmill Energy

2. Introductions

3. Device Design Overview

4. Final Material List 0.5m x 0.5m plywood 2 2x4s Metal rod Dowel rod
2 Basketball cups
550 ft of wire
4 ceramic block magnets
Nails / Clips / Glue

5. Electrical/Mechanical Aspects
Generator Version 7.0
Max Voltage: 1.7
Initial designs: Cardboard Box, PVC pipe
Windmill Version 2.0
Initial Design: Cans instead of Cups

6. Efficiency Wind Speed = 10 m/s at 6 inch from fan
Power = 0.5 x air density x area exposed to wind x velocity cubed
Given that our area is 14 in^2, or meters^2, the maximum power is 5.53 watts.
Our generator produced Watts, giving an efficiency of ( / 5.53) * 100 = %

7. Construction Issues Magnet alignment inside the generator
Connecting the windmill shaft to the generator shaft
Structure of the generator
Initial windmill design did not spin fast enough
General friction of moving parts

8. Conclusions