Up next in How to Do Fun Tech & Science Projects (52 videos)
Teach your children technical skills and science in fun ways with the tech and science projects in this Howcast video series.
You Will Need
- Hamster running wheel
- Steel ring
- Steel cutters
- Several 1/8 inch thick Grade N-35 Neodymium-Iron-Boron magnets.
- Super glue
- Magnet wire
- Hand-held coil winder
- Scrap pieces of wood
- Electrical wire
- Wire strippers
- 2 red LED lights
- Hardware store or hobby shop (optional)
Build the ring
Find or cut out a large steel ring that fits the outer edge of your hamster wheel.
Attach the magnets
Glue the magnets onto one side of the metal ring. Make sure to use an even number of magnets, alternate the poles, and space them evenly.
Wind the coils
Use a simple hand-held coil winder to wind your magnet wire for 400 turns for two coils. The inner hole of the coil should be about the size of your magnets.
Secure the coils
Twist the ends together so the coil won't unwind and the spread glue into the coils.
Mount the base
Mount a stable piece of wood adjacent to the wheel to secure your coils to. Make sure the piece of wood is close to enough so the coils will almost touch the magnets on the ring.
Mount the coils
Glue each coil to a small piece of wood, then glue those pieces of wood to your wood base. You want to make sure the coils are extremely close to the magnets and each exactly in front of a magnet.
Connect the lights
Use basic electrical wire to connect your lights to the coils. Use two lights because LED lights only pass current in one direction, so connecting two backwards to each other will send light back and forth.
Test the lights
Test the lights by spinning the wheel yourself, you should notice that when one light is on, the other is off. Now try it with your hamster and have fun.