Arduino ZMPT101B Voltage Sensor with LCD Display

This Arduino project measures both AC and DC voltages using the ZMPT101B sensor and displays the readings on a 16x2 LCD screen.

Components Used

• ZMPT101B Voltage Sensor
• Arduino Board (e.g., Arduino Uno)
• 16x2 LCD with I2C Interface
• Potentiometer for LCD Contrast Adjustment

Libraries Required

• ZMPT101B (Install via Arduino Library Manager)
• LiquidCrystal_I2C (Install via Arduino Library Manager)

Circuit Diagram

Describe your circuit diagram here, explaining how the ZMPT101B sensor and LCD are connected to the Arduino board.

Setup

1. Install Libraries: Install the ZMPT101B and LiquidCrystal_I2C libraries using the Arduino Library Manager.

2. Connect Components:

   • Connect the ZMPT101B sensor to analog pin A0 on the Arduino board.
   • Connect the 16x2 LCD to the Arduino via I2C (usually A4 and A5).

3. Adjust Sensitivity:

   • Use the SENSITIVITY constant in the code to adjust the sensitivity based on your calibration needs.

4. Upload Code: Upload the provided Arduino sketch (voltage_sensor_lcd.ino) to your Arduino board.

5. Monitor Output:

   • Open the Serial Monitor to view AC and DC voltage readings.
   • The LCD will display real-time AC and DC voltages.

Code Explanation

• setup() Function: Initializes serial communication, sets the ZMPT101B sensor sensitivity, and initializes the LCD.

• loop() Function: Continuously reads AC and DC voltages from the sensor, prints them to the Serial Monitor, and displays them on the LCD.

Additional Notes

• Ensure the ZMPT101B sensor is rated for the voltage range you are measuring (typically 0-250V AC).
• Adjust the SENSITIVITY constant based on calibration values obtained from the sensor.

Author

• Usmana Zulfiqar
• Email: usmanazulfiqar2001@gmail.com
• GitHub: usmana5809

License

This project is licensed under the MIT License - see the LICENSE file for details.