Introduction

This project is an environmental monitoring system built using the ESP32 microcontroller. It monitors temperature and humidity using a DHT sensor, controls a relay, and sends data to an MQTT broker. The system ensures continuous internet connectivity and handles MQTT messaging.

Features

• Wi-Fi connectivity
• DHT sensor integration for temperature and humidity monitoring
• Relay control
• MQTT client for data publishing
• Uptime tracking
• Logging system for status and error messages

Installation

1. Clone the repository:

   git clone https://github.com/unrealbg/ESP32-Env-Monitor-PO.git
   cd ESP32-Env-Monitor-PO

2. Install dependencies:

   • Ensure you have the Arduino IDE installed.
   • Install the necessary libraries:
     • WiFi
     • PubSubClient
     • DHT sensor library

3. Configure the project:

   • Update the config.h file with your Wi-Fi credentials and MQTT broker details.

Usage

1. Upload the code:

   • Connect your ESP32 to your computer.
   • Open the project in Arduino IDE.
   • Select the correct board and port.
   • Upload the code to the ESP32.

2. Monitor the system:

   • Open the Serial Monitor in Arduino IDE to view logs.
   • The ESP32 will connect to Wi-Fi, start the MQTT client, and begin monitoring temperature and humidity.

3. MQTT Messaging:

   • The system will publish temperature and humidity data to the configured MQTT topic.
   • It will also handle incoming MQTT messages and log them.

Code Structure

• src/main.cpp: Main application code handling setup and loop functions.
• RelayService.h/.cpp: Handles relay control.
• DhtService.h/.cpp: Manages the DHT sensor.
• InternetConnectionService.h/.cpp: Ensures continuous internet connectivity.
• MqttClientService.h/.cpp: Manages MQTT client operations.
• UptimeService.h/.cpp: Tracks and logs system uptime.
• LogHelper.h/.cpp: Provides logging functionality.

Contributions

Contributions are welcome! Please fork the repository and submit pull requests.

License

This project is licensed under the MIT License.