RoboGenesis RC Car - ESP32 Project

Overview

Intelligent RC car using ESP32 with L298N motor driver and ultrasonic obstacle avoidance system.

Hardware Components

• ESP32 Development Board
• L298N Motor Driver
• DC Motors (x2)
• HC-SR04 Ultrasonic Sensor
• SG90 Servo Motor
• RC Car Chassis

Pin Configuration

L298N Motor Driver

• Left Motor Enable: GPIO 25
• Left Motor IN1: GPIO 26
• Left Motor IN2: GPIO 27
• Right Motor Enable: GPIO 32
• Right Motor IN1: GPIO 33
• Right Motor IN2: GPIO 14

Ultrasonic Sensor & Servo

• Servo Pin: GPIO 4
• Ultrasonic Trig: GPIO 2
• Ultrasonic Echo: GPIO 15

Features

• Differential Drive Control: Smooth turning with independent wheel speed control
• Obstacle Avoidance: Continuous scanning with intelligent path planning
• Emergency Stop: Immediate response to close obstacles
• Modular Design: Easy integration with future Bluetooth safety override
• State Machine: Robust behavior management

Installation

1. Install PlatformIO IDE
2. Open project folder
3. Connect hardware according to pin configuration
4. Upload code using PlatformIO

Usage

• Car will automatically start moving forward
• Continuously scans for obstacles
• Automatically avoids obstacles using intelligent path selection
• Monitor Serial Monitor (115200 baud) for status updates

Future Integration

• Bluetooth safety override system
• Manual control mode
• Advanced path planning algorithms
• Camera integration