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Smart Traffic Light System with Camera Detection
Overview
This project implements a smart traffic light system using an ESP32 microcontroller. The system includes: • Traffic Lights (LEDs): Controlled by the ESP32. • Camera Integration: Detects pedestrians and adjusts the timer accordingly. • WiFi Web Server: Hosts a basic web page for monitoring and interaction.
How It Works 1. The camera detects pedestrians at the crosswalk. 2. If a pedestrian is detected, the timer increases, allowing more time for crossing. 3. The system controls traffic lights (LEDs on GPIO 16 and 17). 4. A web interface is provided via an ESP32 web server.
Hardware Requirements • ESP32 Development Board • LEDs (for traffic light simulation) • Resistors (as needed) • Camera Module (for person detection) • Power Supply (5V)
Software Requirements • Arduino IDE (or PlatformIO) • ESP32 Board Library • WiFi Library (built-in)
Circuit Diagram
Component ESP32 Pin Red LED GPIO 16 Green LED GPIO 17 Camera Configured via ESP32 CAM pins
Installation & Setup 1. Clone the repository:
git clone https://github.com/your-repository/smart-traffic-light.git
2. Open the code in Arduino IDE.
3. Install ESP32 Board Support:
• Go to Preferences → Add the following URL in “Additional Board Manager URLs”:
https://dl.espressif.com/dl/package_esp32_index.json
• Install ESP32 by Espressif Systems in the Board Manager.
4. Connect ESP32 to your computer via USB.
5. Set up WiFi credentials in the code:
const char* ssid = "your_network_name"; const char* password = "your_network_password";
6. Upload the code and open the Serial Monitor.
Code Breakdown • WiFi Access Point Setup: • ESP32 starts as a soft access point with a predefined SSID/password. • Clients can connect and access a basic web page. • Traffic Light Control: • GPIO 16 (Red LED) and GPIO 17 (Green LED) simulate traffic lights. • Future expansion: integrate a real traffic signal. • Web Server Handling: • Listens for HTTP requests. • Displays a basic web page (Hello, World!).