Auto Plant Watering System (Java & Arduino)

A modern, high-tech plant watering system that keeps your green friends happy automatically! This project uses Java (Firmata4j) to talk to an Arduino board, providing a real-time monitoring dashboard, data logging, and an interactive hardware setup.

Live Demo: tasdidnoor.com/WateringSystemJAVA

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Features

• Smart Watering: Automatically detects soil moisture and waters the plant for 5 seconds when it gets too dry.
• Interactive Calibration: Use a potentiometer to set your custom "Dry Threshold" visually on an OLED screen.
• Real-time Monitoring:
  • OLED Display: Shows live moisture levels, thresholds, and watering status.
  • Live Graphing: A pop-up window shows soil moisture trends over time.
  • Data Logging: Every cycle is logged into a CSV file (water_log.csv) for future analysis.
• Emergency Stop: A physical button allows you to stop the system immediately in case of overflow or issues.
• Audio-Visual Feedback: Integrated Buzzer and LED patterns for system status (startup countdown, watering, and emergency).

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Hardware Requirements

To build this, you'll need:

1. Arduino Uno
2. Capacitive Soil Moisture Sensor (Connected to A2)
3. Potentiometer (Connected to A0)
4. Water Pump (Connected via Relay/Transistor to D7)
5. SSD1306 OLED Display (I2C)
6. LED (Connected to D4)
7. Buzzer (Connected to D5)
8. Push Button (Connected to D6)

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Calibration & Testing

The system uses voltage-based thresholding for precise moisture control. Calibration is performed using a multimeter to find the optimal dry and wet voltage points.

Dry Threshold Calibration	Wet Threshold Calibration
Measuring voltage for dry soil	Measuring voltage for wet soil

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Getting Started

1. Prepare your Arduino

1. Open the Arduino IDE.
2. Go to File -> Examples -> Firmata -> StandardFirmata.
3. Select your board (Arduino Uno) and Port.
4. Click Upload.

2. Setup IntelliJ IDEA

1. Open the project in IntelliJ IDEA.
2. Configure Project SDK (JDK 17+).
3. Ensure all .jar files in the lib folder are added as project libraries.

3. Run the Program

1. Open src/Main.java.
2. Update the myPort string with your Arduino's COM port (e.g., "COM5").
3. Run the main method.

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How to Use

1. Startup: The system will connect to your Arduino.
2. Threshold Setting: Turn the potentiometer knob to set how "dry" you want the soil to be before it waters. Press the Button (D6) once to confirm.
3. Loop: The system checks moisture every 60 seconds.
   • If it's too dry, the pump runs for 5 seconds.
4. Adjustment: During the 60-second wait, you can adjust the dry threshold live using the knob.
5. Emergency: Press the Button (D6) at any time to trigger an emergency shutdown.

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License

This project is licensed under the MIT License.

Contact

If you have any questions or need assistance, feel free to reach out at: contact@tasdidnoor.com

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Smart Irrigation for Smart Plants.