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Line Follower


  • Arduino Uno
  • Chassis & wheels(2)
  • Caster Wheel
  • Mini Breadboard
  • IR sensor(2)
  • Motor driver L293D
  • BO Motor(2)
  • Battery with battery holder
  • Jumper wires

Two IR sensors are used to move the robot in a straight line. When the right IR sensor is on the black line the robot moves in right direction (the motors are
controlled by code).Likewise when left IR sensor is on black line the robot is
programmed to move in left direction. There is one transmitter and one receiver in every IR pair . The transmitter sends infrared waves which are absorbed by black line and the receiver does not receive any signal/waves.In this case the output of the sensor is LOW. If there is no black line beneath the sensor the waves are reflected and detected by receiver(output signal is HIGH).

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