95 lines
3.6 KiB
Markdown
95 lines
3.6 KiB
Markdown
# IoT Smart Farming System
|
|
|
|
This repository contains the code for an IoT-based smart farming system. It integrates multiple sensors for environmental monitoring and uses MQTT for real-time communication, facilitated by the **CloudAMQ** provider.
|
|
|
|
## Overview
|
|
|
|
The system employs an **ESP32** microcontroller to gather data from the following sensors:
|
|
- **BH1750**: Measures light intensity.
|
|
- **DHT11**: Measures temperature and humidity.
|
|
- **Two NPK sensors**: Measure soil nutrient levels (Nitrogen, Phosphorus, and Potassium).
|
|
|
|
An **LCD display** is used to visualize data locally, where the right bottom corner shows the number of connected sensors.
|
|
|
|
## Code Structure
|
|
|
|
This project includes six files, with the final and most updated version being:
|
|
- **Mfarming_read_rev9**: The final version of the code. This is the file to flash onto your ESP32 device for deployment.
|
|
|
|
## Features
|
|
|
|
- **Light Intensity Monitoring**: Data from the BH1750 sensor is published via MQTT.
|
|
- **Temperature and Humidity Monitoring**: Data from the DHT11 sensor is published via MQTT.
|
|
- **Soil Nutrient Monitoring**: Data from the two NPK sensors is published via MQTT.
|
|
- **Relay Control**: MQTT subscriptions enable controlling external devices like irrigation systems and lighting through defined topics.
|
|
- **LCD Display**: The LCD shows sensor data, and the number of sensors is displayed in the right bottom corner.
|
|
|
|
## MQTT Topics
|
|
|
|
### Publish Topics (Sensor Data)
|
|
- **farm/bht**: Publishes light intensity data from the BH1750 sensor.
|
|
- **farm/npk1**: Publishes soil nutrient data from NPK sensor 1.
|
|
- **farm/npk2**: Publishes soil nutrient data from NPK sensor 2.
|
|
|
|
### Subscribe Topics (Relay Control)
|
|
- **relay1**: Controls the first relay.
|
|
- **relay2**: Controls the second relay.
|
|
- **relay3**: Controls the third relay.
|
|
- **relay4**: Controls the fourth relay.
|
|
- **relay5**: Controls the fifth relay.
|
|
- **relay6**: Controls the sixth relay.
|
|
|
|
## CloudAMQ Configuration
|
|
|
|
The system uses **CloudAMQ** as the MQTT broker provider. Ensure you configure your credentials (broker address, username, and password) in the code to enable MQTT communication.
|
|
|
|
## Hardware Requirements
|
|
- **Microcontroller**: ESP32
|
|
- **Sensors**:
|
|
- BH1750 for light intensity
|
|
- DHT11 for temperature and humidity
|
|
- Two NPK sensors for soil nutrients
|
|
- **LCD Display**: For visualizing sensor data and indicating the number of sensors
|
|
- **Relays**: For controlling external devices
|
|
|
|
## Getting Started
|
|
|
|
1. **Clone the Repository**:
|
|
```bash
|
|
git clone <repository-url>
|
|
```
|
|
|
|
2. **Final Code**:
|
|
The `Mfarming_read_rev8` file is the final version of the code. Use this file to flash onto your ESP32.
|
|
|
|
3. **Configure CloudAMQ**:
|
|
Update the code with your CloudAMQ broker details (address, username, and password).
|
|
|
|
4. **Use the LCD Display**:
|
|
The LCD will display real-time sensor data, with the sensor count visible in the bottom-right corner.
|
|
|
|
5. **Run the System**:
|
|
Once deployed, the ESP32 will publish sensor data to the specified MQTT topics and receive commands from the subscribed relay topics.
|
|
|
|
## Dependencies
|
|
|
|
- **ESP32** board
|
|
- Libraries:
|
|
- **Adafruit_BH1750** for the BH1750 sensor
|
|
- **DHT sensor library** for the DHT11 sensor
|
|
- **ModbusMaster** for NPK sensor communication
|
|
- **PubSubClient** for MQTT communication
|
|
- **LiquidCrystal_I2C** for the LCD display
|
|
|
|
## Future Enhancements
|
|
|
|
- Add additional MQTT topics for controlling more devices (e.g., `relay3`, `relay4`).
|
|
- Expansion to more sensors or automated farming systems.
|
|
|
|
## Contributing
|
|
|
|
Contributions are welcome! Please submit any issues or pull requests to help improve the system.
|
|
|
|
## License
|
|
|
|
This project is licensed under the MIT License. |