Lightbot

The lightbot uses two photocells  to control direction. The photocell controls the input voltage to the transsistor.

Below: Photo of circuit as built. All ground wires are color-coded black, +V wires red, signal wires green or white

Wires are kept as short as possible- neatness matters!

Below: Schematic diagram

Wiring diagram as constructed:

Below: Solderless breadboard front and rear: