A real-time water quality monitoring system built with Arduino to measure turbidity (water clarity) and water level. This project includes a live LCD display and audio alerts for low water level warnings.
- 📏 Real-Time Turbidity Measurement in NTU
- 🌊 Water Level Monitoring with threshold-based alert
- 🖥️ Live Display on 16x2 I2C LCD
- 🔊 Buzzer Alert for low water level
- 🔋 Low Power Operation (updates every 60 seconds)
| Component | Purpose | Arduino Pin(s) |
|---|---|---|
| Arduino Uno / Nano | Microcontroller | — |
| Turbidity Sensor | Measures water clarity (NTU) | A1 |
| Water Level Sensor | Detects water level | A0 |
| 16x2 I2C LCD (0x27) | Displays turbidity & level data | SDA: A4, SCL: A5 |
| Buzzer | Audio alert for low water level | D8 |
| Breadboard / PCB | Circuit assembly | — |
| Jumper Wires | Wiring connections | — |
Install the following libraries using the Arduino Library Manager:
Wire.h(built-in)LiquidCrystal_I2C.h
- Connect all components based on the pin configuration table above.
git clone https://github.com/Janvi-M/AquaMonitor.git
cd AquaMonitor- Open
turbidity_water_monitor.inoin Arduino IDE - Select your board and COM port
- Click Upload to flash the code
Update the following values in the .ino file as needed:
if (water_level < 200) { // Water level threshold
tone(buzzer_pin, 1000); // Buzzer frequency in Hz
delay(2000); // Alert duration in milliseconds
}
delay(60000); // Reading interval in milliseconds
| Parameter | Default | Description |
|---|---|---|
| Turbidity ADC Range | 0–208 | Mapped to 300–0 NTU |
| Water Level Threshold | 200 | Level below which buzzer triggers |
| Buzzer Frequency | 1000 Hz | Tone frequency |
| Alert Duration | 2 seconds | Duration of buzzer sound |
| Reading Interval | 60 secs | Time delay between sensor readings |
