IoT Environmental Monitoring System

Overview

This Internet of Things (IoT) project involves building an environmental monitoring system using an ESP32 microcontroller. The system integrates sensors for air quality and temperature, with real-time data visualization through a web application.

Features

• Sensor Integration: Utilizes MQ gas and DHT temperature sensors to measure air quality and temperature.

• Actuators: Implements LEDs and a buzzer as actuators to provide visual and audible feedback based on environmental conditions.

• Wireless Communication: The ESP32 connects to a Wi-Fi network and communicates with a Node.js server over HTTP for real-time data transmission.

• Web Application: Employs a basic web application built with Node.js, Express, and Socket.IO for dynamic data visualization.

Project Structure

• controller: Contains the Node.js server code responsible for handling HTTP requests and managing WebSocket connections.

• model: Represents the model layer responsible for communicating with the ESP32, processing sensor data, and responding to controller requests.

• view: Holds the static HTML file for the web application, including JavaScript to establish a WebSocket connection for real-time updates.

Setup Instructions

1. Hardware Configuration:

   • Connect the MQ gas sensor, DHT temperature sensor, LEDs, and buzzer to the ESP32 on a breadboard.

2. Software Configuration:

   • Modify your router ssid and password in the esp32/esp32.ino file.
   • Upload the provided ESP32 firmware code to read sensor data and establish Wi-Fi communication.

3. Node.js Server:

   • Install Node.js and run npm install in the root directory to install dependencies.
   • Start the server using npm start.

4. Web Application:

   • Open the view/public/index.html file in a web browser to view real-time sensor data.
   • (Alternative) Check for your IPv4 address and open http://ip_address:8080 in a web browser.

Usage

Access the web application to monitor environmental data in real time. LEDs and the buzzer will indicate air quality, while temperature readings are displayed on the web page.

Contributing

Contributions are welcome! Feel free to open issues or pull requests.