Bluetooth Controlled Car using Arduino and HC-05

Overview

This project implements a Bluetooth-controlled robotic car using Arduino Uno, HC-05 Bluetooth module, and an L298N motor driver.

The car can be controlled wirelessly from a smartphone using Bluetooth commands.

Features

• Forward movement
• Backward movement
• Left turn
• Right turn
• Stop command
• Wireless Bluetooth control

Hardware Components

• Arduino Uno
• HC-05 Bluetooth Module
• L298N Motor Driver
• DC Motors
• Robot Chassis
• Battery Pack

Bluetooth Commands

Command	Action
F	Forward
B	Backward
L	Left
R	Right
S	Stop

Pin Configuration

Left Motor

• IN1 → D6
• IN2 → D7

Right Motor

• IN3 → D8
• IN4 → D9

HC-05 Bluetooth Module

• TX → Arduino RX
• RX → Arduino TX

Working Principle

The HC-05 Bluetooth module receives commands from a smartphone application and sends them to the Arduino through serial communication.

The Arduino reads the incoming command and drives the motors through the L298N motor driver.

Technologies Used

• Arduino IDE
• Embedded C / Arduino C++
• HC-05 Bluetooth Communication
• L298N Motor Driver
• Serial Communication

Author

Sarthak Sharma