Hi dudes, above is the working of my light sensing robot made using LDR. You can get the circuit diagram below..
All you need is a PCB, two LDR's, two 330 ohm resistors, two NPN Transistors(ST2N 2222A G4 C), 5k ohm potentiometer, 2 toy motors, 12 volt DC supply, connecting wires and soldering equipments.
You should keep in mind that if Left LDR senses light, the left motor should stop and Right Motor should work. Then Only it will go to the direction of sensed light(Here left) and if Right LDR senses light, the right motor should stop and Left motor should work.Then Only it will go to the direction of sensed light(Here right).
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