IR leds and Photo diode

Want to make a line following robot……..? Let’s do it....!
What do you require to make a line follower...?
- Good sensors
- Motors
- And some intelligence....

Let’s see how to make good sensors to follow the line…
As we know that we have to follow the black line on white
surface or white line on black surface… it means we have to
detect white and black surface
So how would be our sensors…?
Our sensors should reflect from any of these surfaces…
As we are using the property of reflection so “Infrared Light
(IR)” would be an ideal choice…Because IR not get affected by other light source

What are you looking at when you think of a line follower??
-It should follow the line as fast and unwavering as possible. Some useful
guidelines are for a line…
-Sensors should be placed as far away from the motors as possible so that
we have enough time to change motor direction.
-The weight of the machine should be evenly balanced
-Construction of the robot and sensor placement will depend upon the speed
of the motors to be used