The RC Car using Arduino and L298N is a microcontroller-based robotic vehicle designed for remote navigation and motion control. At the core of the system is the Arduino Uno (or Nano), which executes the control logic. The L298N dual H-bridge motor driver interfaces between the low-power Arduino signals and high-current DC motors, enabling bidirectional motor rotation and speed control using PWM (Pulse Width Modulation).

⚙️ Working Principle

• The remote device (smartphone app via Bluetooth HC-05 / RF module / Wi-Fi module like ESP8266) sends directional commands.
• Arduino receives the data through serial communication.
• Based on the command, Arduino sets motor driver input pins HIGH/LOW.
• The L298N energizes motors accordingly, controlling direction and speed.

🧩 Main Components

• Arduino Uno / Nano
• L298N Motor Driver Module
• 2 or 4 DC Geared Motors
• Car Chassis with Wheels
• Bluetooth (HC-05) / RF / Wi-Fi Module
• 7.4V–12V Battery Pack

🚦 Features

• Forward, Backward, Left, Right movement
• Speed control using PWM
• Wireless operation
• Expandable to obstacle avoidance or line-following system
• Can be upgraded with sensors (Ultrasonic, IR, Camera, etc.)

🧠 Technical Concepts Involved

• Embedded C Programming
• PWM Motor Speed Control
• Serial Communication (UART)
• H-Bridge Motor Driving Logic
• Power Electronics Basics