Make your own solar powered robot

The fallowing robots are powered only by light, which means no batteries are required. Make your own solar powered robot at home using things you probably already have. Transistors, resistor, capacitor, solar battery and flashing LED are available at any electronic store, if you don't already have them.
Solar cells out of calculators work as well, you might want to use more than one since they are really small. If you do, connect the positive wire from each solar battery together.
A small motor should be used like the ones in walkmans. Solder everything together and watch it come alive.
Put it under a light and let it charge, it should take couple seconds for each burst of energy. Works best in sunlight.

Things you will need:

2N3904 Transistor	Motor
2N3906 Transistor	2.2V Flashing Green LED
4700 uF Capacitor	Solar Cell
2.2 kilo-ohm resistor

How to make it:

... a schematic diagram for a simple solar powered robot at.
http://members.tripod.com/~TrEbOr69/solar/schema.JPG