🌱 Smart Irrigation System - Assembly & Arduino

An intelligent automated irrigation system with dual implementation: Arduino and Assembly language

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📖 Overview

This project presents a Smart Irrigation System that automatically monitors soil moisture levels and controls a water pump to maintain optimal soil conditions. The system features:

• 🎯 Real-time soil moisture monitoring (0-100% scale)
• 💧 Automatic pump control based on moisture thresholds
• 📺 LCD display for status visualization
• 🔄 Dual implementation - Arduino (C++) and Assembly language
• ⚡ Low-power design suitable for field deployment

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⚙️ Features

Moisture Level Detection

The system categorizes soil moisture into three levels:

Status	Moisture Range	Pump Action	Display
🔴 DRY	0% - 50%	✅ Pump ON	"STATUS: DRY PUMP: ON"
🟡 NORMAL	51% - 75%	❌ Pump OFF	"STATUS: NORMAL PUMP: OFF"
🟢 WET	76% - 100%	❌ Pump OFF	"STATUS: WET PUMP: OFF"

Intelligent Control Logic

• Automatic calibration support for different soil types
• Hysteresis prevention to avoid rapid on/off cycling
• Serial monitor output for debugging and data logging

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🛠️ Hardware Requirements

Core Components

• Arduino Board (Uno/Nano/Mega)
• Soil Moisture Sensor (Analog output)
• Relay Module (5V, supports active-low/active-high)
• Water Pump (12V DC recommended)
• 16x2 LCD Display (I2C interface, address 0x27)

Connections

Arduino          Component
-------          ---------
Pin A0    →      Soil Moisture Sensor (Analog Out)
Pin 4     →      Relay Module (Signal)
SDA       →      LCD I2C (SDA)
SCL       →      LCD I2C (SCL)
5V        →      Sensors & LCD Power
GND       →      Common Ground

Power Supply

• Arduino: 5V via USB or 7-12V barrel jack
• Pump: Separate 12V power supply (connected through relay)

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💻 Software Versions

1️⃣ Arduino Version (C++)

Located in /Arduino-version/

Key Features:

• Uses Arduino IDE libraries
• Easy to modify and calibrate
• Serial debugging support
• I2C LCD library integration

Dependencies:

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

Calibration:

const int dryAnalog = 600;  // Adjust based on your sensor
const int wetAnalog = 100;  // Adjust based on your sensor

2️⃣ Assembly Version

Located in /Aseembly-version/

Key Features:

• Low-level hardware control
• Optimized for performance
• Direct register manipulation
• Educational value for understanding microcontroller architecture

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🚀 Getting Started

Arduino Version

1. Install Required Libraries:

   • Open Arduino IDE
   • Go to Sketch → Include Library → Manage Libraries
   • Install: LiquidCrystal I2C by Frank de Brabander

2. Open the Project:

   cd Arduino-version/CO_New_copy_20251217214409/

   Open CO_New_copy_20251217214409.ino in Arduino IDE

3. Configure:

   • Adjust dryAnalog and wetAnalog values based on your sensor
   • Set relayActiveLow to match your relay module type

4. Upload:

   • Select your Arduino board type
   • Choose the correct COM port
   • Click "Upload"

5. Monitor:

   • Open Serial Monitor (9600 baud)
   • Observe moisture readings and pump status

Assembly Version

1. Navigate to the Assembly version directory:

   cd Aseembly-version/

2. Follow the specific assembly toolchain instructions for your setup

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📊 System Logic Flow

┌─────────────────┐
│  Read Sensor    │
│  (Analog A0)    │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│  Map to 0-100%  │
│  Moisture Scale │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│  Check Ranges   │
├─────────────────┤
│ ≤50%   → DRY    │
│ 51-75% → NORMAL │
│ ≥76%   → WET    │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│  Control Pump   │
│  Update LCD     │
└─────────────────┘

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🔧 Customization

Adjusting Moisture Thresholds

Modify these values in the code:

if (moisture <= 50) {
    // DRY condition - change threshold here
}
else if (moisture <= 75 && moisture >= 51) {
    // NORMAL condition - change thresholds here
}

Changing LCD Address

If your LCD uses a different I2C address:

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Change 0x27 to your address

Find your address using an I2C scanner sketch.

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📝 Serial Monitor Output Example

Moisture: 45%
STATUS: DRY (0-50) - PUMP ACTIVATED
Pump State: ON - Watering...

Moisture: 63%
STATUS: NORMAL (51-75) - PUMP OFF
Pump State: OFF - No watering

Moisture: 82%
STATUS: WET (76-100) - PUMP OFF
Pump State: OFF - No watering

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🎓 Learning Outcomes

This project demonstrates:

• ✅ Analog sensor interfacing
• ✅ Relay control for high-power devices
• ✅ I2C communication protocol
• ✅ Threshold-based decision making
• ✅ Real-time system design
• ✅ Low-level programming (Assembly version)

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🤝 Contributing

Contributions are welcome! Here's how you can help:

1. 🍴 Fork the repository
2. 🌿 Create a feature branch (git checkout -b feature/AmazingFeature)
3. 💾 Commit your changes (git commit -m 'Add AmazingFeature')
4. 📤 Push to the branch (git push origin feature/AmazingFeature)
5. 🔀 Open a Pull Request

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📜 License

This project is open source and available

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👨‍💻 Author

Mahmoud7111

• GitHub: @Mahmoud7111
• Repository: smart-irrigation-assembly-and-arduino

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🙏 Acknowledgments

• Arduino Community for excellent libraries
• Contributors to open-source sensor libraries
• Everyone who has provided feedback and suggestions

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📞 Support

If you encounter any issues or have questions:

1. Check the existing Issues
2. Create a new issue with detailed information
3. Provide your hardware setup and serial monitor output

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