How to Make a Solar Top Robot (1)

Here is Simple Electronic Solar Project of  Top Robot (1) Make a Robot is not easy, but also not very difficult. Here we start from an easy example – Solar Top. It has below function:

    Rotator under sunshine
    Come back if meet Obstacle
    Keep stay in no sunshine place.

This is a simple automatic robot. It don't need people maintance. The life is depend on the environment and mechanical wear. The parts cost is very low.

The following is the parts you need:

    Clip  6 units
    Mini Motor  1 unit
    Capacitor  3 units
    NPN Triode  1 unit
    PNP Triode  1 unit
    2.2K resistance  1 unit
    LED light 1 unit
    Some Wire
    Small Solar Panel ( >4V, 10mA)  1 unit
    Some Solder Wire
    Perforated Board 1 unit

Below is the robot circuit diagram:

Source Link: www.w3circuits.com