Circuit Documentation

Summary

This circuit is designed to control a pair of DC Mini Metal Gear Motors using an L298N DC motor driver, with an Arduino Nano as the microcontroller. The system is powered by a 7.4V power source. An HC-05 Bluetooth Module is included for wireless communication, likely for remote control purposes. Additionally, a 5 channel IR array is connected to the Arduino Nano for sensor input, which could be used for line tracking or obstacle detection.

Component List

Power Source

• Name: 7.4v
• Description: Provides the power required for the circuit.

L298N DC Motor Driver

• Name: L298N DC motor driver
• Description: Controls the direction and speed of the DC motors.

5 Channel IR Array

• Name: 5 channel IR array
• Description: Senses the presence of objects or lines by emitting and detecting IR light.

Arduino Nano

• Name: Arduino Nano
• Description: A compact microcontroller used to control the circuit logic.

DC Mini Metal Gear Motor (x2)

• Name: DC Mini Metal Gear Motor
• Description: Provides mechanical motion for the system.

HC-05 Bluetooth Module

• Name: HC-05 Bluetooth Module
• Description: Enables wireless communication for remote control.

Wiring Details

Power Source

• 7.4v
  • + to Arduino Nano VIN, HC-05 Bluetooth Module VCC, 5 channel IR array VCC
  • - to Arduino Nano GND, HC-05 Bluetooth Module GND, 5 channel IR array GND, L298N DC motor driver GND

L298N DC Motor Driver

• L298N DC motor driver
  • OUT1 to DC Mini Metal Gear Motor IN2
  • OUT2 to DC Mini Metal Gear Motor IN1
  • OUT3 to DC Mini Metal Gear Motor IN2
  • OUT4 to DC Mini Metal Gear Motor IN1

5 Channel IR Array

• 5 channel IR array
  • A5 to Arduino Nano A0
  • A4 to Arduino Nano A1
  • A3 to Arduino Nano A2
  • A2 to Arduino Nano A3
  • A1 to Arduino Nano A4
  • VCC to 7.4v +
  • GND to 7.4v -

Arduino Nano

• Arduino Nano
  • VIN to 7.4v +
  • GND to 7.4v -
  • A0 to 5 channel IR array A5
  • A1 to 5 channel IR array A4
  • A2 to 5 channel IR array A3
  • A3 to 5 channel IR array A2
  • A4 to 5 channel IR array A1
  • D1/TX to HC-05 Bluetooth Module RXD
  • D0/RX to HC-05 Bluetooth Module TXD

DC Mini Metal Gear Motor

• DC Mini Metal Gear Motor
  • IN1 to L298N DC motor driver OUT2/OUT4
  • IN2 to L298N DC motor driver OUT1/OUT3

HC-05 Bluetooth Module

• HC-05 Bluetooth Module
  • VCC to 7.4v +
  • GND to 7.4v -
  • TXD to Arduino Nano D0/RX
  • RXD to Arduino Nano D1/TX

Documented Code

Arduino Nano Code (sketch.ino)

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

}

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

}

Note: The provided code is a template and does not contain any functional logic. It needs to be populated with the specific setup and loop instructions to control the motors and read sensor data.