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Line Follower Robot

What is Needed?

Robot Car Kit
5V 2 channel Relay
9V Battery
Arduino Uno
Jumper

BLOCK DIAGRAM

Procedure

  1. Line Follower Robot Hardware
  2. Connections
  3. Output

Procedure

DC Motor

The DC motor is a machine that transforms electric energy into mechanical energy in form of rotation.

Relay

A Relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current.

9V Battery

A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars.

Arduino Uno

The Arduino Uno board is a microcontroller based on the ATmega328. It has 14 digital input/output pins in which 6 can be used as PWM outputs, a 16 MHz ceramic resonator, an ICSP header, a USB connection, 6 analog inputs, a power jack and a reset button. This contains all the required support needed for microcontroller.

Connections

Connect the 5V Relay’s VCC to Arduino Uno’s 5V pin.

Connect the 5V Relay’s Ground (GND) to Arduino Uno’s GND pin.

Connect the 5V Relay’s Input1 (I1) to Arduino Uno 5th pin.

Connect the 5V Relay’s Input2 (I2) to Arduino Uno 7th pin.

Connect one(Motor1) end of the motor with Relay1’s NO(Normally Open)

Connect the other (Motor1) end of the motor to Negative(-) side of 9V battery.

Connect Relay’s Common (COM) to Positive(+) side of 9V battery.

Inter connect the two Relay’s Common (COM)

Connect one(Motor2) end of the motor with Relay2’s NO(Normally Open)

Connect the other (Motor2) end of the motor to Negative(-) side of 9V battery

Connect IR1 Sensor’s and IR2 Sensor’s VCC to 5V

Connect IR1 and IR2 Sensor’s GND to Arduino Uno’s GND

Connect IR1 Sensor’s D0 to Arduino Uno’s 11th pin.

Connect IR2 Sensor’s D0 to Arduino Uno’s 12th pin.

Give a Power Supply(9V) to Arduino Uno Directly

Output

Make a Path using Black tape for the Line follower Robot to follow .

The Line follower robot senses the Black tape and it will move on the Black tape's Path.

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