🌦️ IoT-Based Weather Monitoring System w/ Live Server

📖 Introduction

This project implements an IoT-based Weather Monitoring System capable of measuring and displaying real-time environmental parameters such as:

• 🌡️ Temperature
• 🌫️ Humidity
• 🏔️ Altitude
• 🌪️ Pressure
• 🌧️ Rainfall Detection

The system uses Arduino Mega 2560 with sensors (DHT11, BMP180, Rain Sensor) and communicates data to the cloud via ThingSpeak API using a NodeMCU ESP8266 WiFi Module.

Real-time readings are:

• Displayed on the Arduino Serial Monitor
• Logged to the cloud for live monitoring
• Shown locally on a 16x2 LCD

This project fulfills the requirements of a Complex Engineering Problem (CEP) and Complex Engineering Activity (CEA) through sensor integration, signal conditioning, and full system-level design & testing.

🎯 Objectives

• Measure atmospheric parameters (temperature, altitude, humidity, pressure, rainfall).
• Perform basic signal conditioning for sensor inputs.
• Simulate, implement, and test a complete weather monitoring system.
• Send real-time data to a cloud server for live visualization.

🛠️ Components Used

• Arduino Mega 2560
• DHT11 Temperature & Humidity Sensor
• BMP180 Pressure Sensor
• Rain Sensor (YL-83 Module)
• ESP8266 NodeMCU (for WiFi & ThingSpeak API)
• 16x2 LCD with PCF8574 I2C Serial Interface Adapter
• Breadboard, jumper wires, USB cable

📂 Project Structure

📁 WebServer/


├── server.js # Node.js server implementation


└── other node files...

📁 iot_based_weather_monitoring/


├── proteus_simulation/ # Proteus design files for circuit simulation


└── sketch_iot_based_monitoring/


└── sketch.ino # Arduino implementation

🚀 How to Run

1. Arduino Setup

   • Open sketch_iot_based_monitoring/sketch.ino in Arduino IDE.
   • Connect your Arduino Mega 2560 and upload the sketch.
   • Ensure sensors are wired as per Proteus schematic.

2. Server Setup

   • Navigate to the WebServer/ folder.
   • Install dependencies:

     npm install

   • Run the Node.js server:

     node server.js

3. ThingSpeak Integration (deprecated - now only using NodeJS)

   • Configure your ThingSpeak API key in the Arduino code.
   • Monitor real-time weather data on your ThingSpeak channel.

📌 Reference

• Live weather monitoring system successfully implemented using IoT + Arduino + NodeMCU.
• Full implementation details, objectives, and testing provided in the report file.