After doing research for precedents and ideas on Define and Inquire, I decided to make a fidget spinner generator.

 

The key to this device is electromagnetic induction, the process of converting kinetic energy into electrical energy.

 

The school does not provide a fidget spinner, so I will have to purchase it by myself. The fidget spinner should have low resistance because its speed will decrease fast. However, low-resistance spinners are expensive. To have the spinner spin longer, weights should be added at its edges. For higher efficiency, the coil must be winded many times.

 

This is my initial sketch of the structure of the generator:

Materials: neodymium magnets, copper coil, LED, fidget spinner, column, weights, strong glue

 

Process:

  1. Wind the coil into a circular shape
  2. Attach the legs of the LED at the two edges of the coil.
  3. Glue neodymium magnets at each edge of the spinner.
  4. Glue weights at each edge of the spinner but at the opposite side where the magnet is attached.
  5. Glue a column  at the middle of the spinner.