Circuit Documentation

Summary

This circuit is designed to control two DC motors using an Arduino UNO and an L298N DC motor driver. An IR sensor is used to detect obstacles, and a rocker switch is used to control the power supply from a 12V battery.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. L298N DC Motor Driver

   • Description: A dual H-Bridge motor driver that allows control of two DC motors.
   • Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

3. IR Sensor

   • Description: An infrared sensor used for obstacle detection.
   • Pins: out, gnd, vcc

4. DC Motor (Motor 1)

   • Description: A DC motor used for driving mechanical components.
   • Pins: pin 1, pin 2

5. DC Motor (Motor 2)

   • Description: A second DC motor used for driving mechanical components.
   • Pins: pin 1, pin 2

6. Battery 12V

   • Description: A 12V battery used as the power supply for the circuit.
   • Pins: +, -

7. Rocker Switch

   • Description: A switch used to control the power supply from the battery.
   • Pins: 1, 2

Wiring Details

Arduino UNO

• 5V connected to:

  • IR Sensor (vcc)
  • L298N DC Motor Driver (5V)

• GND connected to:

  • IR Sensor (gnd)
  • L298N DC Motor Driver (GND)
  • Rocker Switch (pin 2)

• D7 connected to:

  • IR Sensor (out)

• D5 connected to:

  • L298N DC Motor Driver (IN4)

• D4 connected to:

  • L298N DC Motor Driver (IN3)

• D3 connected to:

  • L298N DC Motor Driver (IN2)

• D2 connected to:

  • L298N DC Motor Driver (IN1)

L298N DC Motor Driver

• 5V connected to:

  • Arduino UNO (5V)

• GND connected to:

  • Arduino UNO (GND)

• IN4 connected to:

  • Arduino UNO (D5)

• IN3 connected to:

  • Arduino UNO (D4)

• IN2 connected to:

  • Arduino UNO (D3)

• IN1 connected to:

  • Arduino UNO (D2)

• OUT1 connected to:

  • DC Motor 2 (pin 2)

• OUT2 connected to:

  • DC Motor 2 (pin 1)

• OUT3 connected to:

  • DC Motor 1 (pin 1)

• OUT4 connected to:

  • DC Motor 1 (pin 2)

• 12V connected to:

  • Battery 12V (+)

IR Sensor

• vcc connected to:

  • Arduino UNO (5V)

• gnd connected to:

  • Arduino UNO (GND)

• out connected to:

  • Arduino UNO (D7)

DC Motor (Motor 1)

• pin 1 connected to:

  • L298N DC Motor Driver (OUT3)

• pin 2 connected to:

  • L298N DC Motor Driver (OUT4)

DC Motor (Motor 2)

• pin 1 connected to:

  • L298N DC Motor Driver (OUT2)

• pin 2 connected to:

  • L298N DC Motor Driver (OUT1)

Battery 12V

• + connected to:

  • L298N DC Motor Driver (12V)

• - connected to:

  • Rocker Switch (pin 1)

Rocker Switch

• pin 1 connected to:

  • Battery 12V (-)

• pin 2 connected to:

  • Arduino UNO (GND)

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation (documentation.txt)