I am trying to make a simple path tracking car. only moving forward, turning left and right are required.
The path is also very simple. Just a black path on a white paper with 90degree turning angle.
My idea: I use a duel motor car so that the left wheel is independent from the right wheel. By using the variation of resistance of a photoresistor due to the reflection of light from the black or white colour, the left motor and the right motor is changed. Then the car can turn left/right.
However, I could only use hardware to do the car.
Moreover, I face a problem that the resistance of a photoresistor/photoransistor is too high for 2 AA battery. The current is too low such that it could not drive the motor.
Actually. i am wondering if I connect some photoresistors in parallel such that the resistance is lowered. But the power consumption is quite high.
Please help. Thank you.