I invented this toy when i was a child. I was trying to
make a perpetual motion machine but made this by accident...
It is fun and very simple...
I did this build at The TechShop in San Jose California... http://techshop.ws/
Materials you are going to need are, (2) small Dc motors, (1) 1/8 split pin, (1) small 6-9volt lightbulb
with 4 inch leads, (1) AC-DC transformer that matches the voltage of of your dc
motors... I got all the materials at HSC electronic surpluss
in sunnyvale california. you also need a soldering iron and solder