Light Following Robot
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by iRFAN 
Collected by 2 users
robot, light sensor, ldr
Robot
 
By iRFAN @ December 15, 2012
Light Following Robot without using microcontroller. This wheeled robot does not avoid collision. It runs towards the light or just brighter areas.
Control method: non-autonomous,moves toward the light or bright areas
Sensors / input devices: 9 volt Battery.,2x LDR, 2x BC547 Transistors, 2x 2 x 30 ohms Resistors, 2 x Gear motor wheels,1 x multi-directional wheel
Target environment: indoor
 

The gear motor wheels, multi-directional wheel and the plastic sheet. I cut out 6 x 13 cm plastic for base.
Glued the wheels to make the body and connected the motors to the components.
After its completed. 
Robot Schematic
  
 

http://letsmakerobots.com/node/35441