ESP8266 NTP Clock with 16×2 I2C LCD Display

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This project uses an ESP8266 NodeMCU to create a 12-hour format NTP clock with AM/PM, date, and day of the week, displayed on a 16×2 I2C LCD. The clock synchronizes time via the NTP (Network Time Protocol) to ensure accuracy.

Features

 

  • Displays real-time clock (12-hour format) with AM/PM indicator.
  • Shows current date and weekday.
  • Synchronizes time via NTP server.
  • Uses I2C 16×2 LCD for display.
  • Auto-updates time based on Indian Standard Time (IST, UTC+5:30).

Components Required

 

Component Quantity
ESP8266 NodeMCU 1
16×2 I2C LCD 1
Jumper Wires As needed

Circuit Diagram

Connections

ESP8266 Pin LCD Pin
3.3V VCC
GND GND
D2 (GPIO4) SDA
D1 (GPIO5) SCL

Installation & Setup

1. Install Required Libraries

Make sure you have the following libraries installed in Arduino IDE:

  • LiquidCrystal_I2C (Download)
  • NTPClient (Download)
  • ESP8266WiFi (Comes with ESP8266 board package)

2. Upload the Code

CODE Download Link

https://github.com/ElectroIoT/ESP8266-NTC-Indian-Time-clock-Using-16×2-LCD

  1. Open the provided code in Arduino IDE.
  2. Replace your_SSID and your_PASSWORD with your WiFi credentials.
  3. Select ESP8266 NodeMCU as the board.
  4. Upload the code and open the Serial Monitor (115200 baud rate).

How the Code Works

  • WiFi Connection: Connects ESP8266 to a WiFi network.
  • NTP Synchronization: Fetches time from an NTP server (pool.ntp.org).
  • Time Conversion: Converts 24-hour format to 12-hour format with AM/PM.
  • Display Update: Updates the LCD every second with time, date, and weekday.

Clock Demo

License

This project is open-source and free to use.

Contributions

Feel free to fork this project and contribute!

Troubleshooting

LCD not displaying anything?

  • Run the I2C Scanner to find the correct I2C address and update it in the code.
  • Ensure SDA and SCL pins are connected properly.

WiFi not connecting?

  • Double-check your WiFi SSID and Password in the code.
  • Make sure your router is working correctly.

For further assistance, feel free to ask! 🚀

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