esp32 rtc internal ntp server digital clock|bangla tutorial,

 esp32 rtc internal ntp server digital clock|bangla tutorial

Get Step-by-Step Guide to Create a Digital Clock with ESP32 RTC & Internal NTP Server: Comprehensive Bangla Tutorial Included

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1. Circuit diagram

     

More details How to Interfacing ESP32 with 16x2 & Tox4 LCD Displays with i2c 

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2. Project code

#include <WiFi.h> #include "time.h" #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); const char* ssid = "OPPO A15s"; const char* password = "12345678"; const char* ntpServer = "pool.ntp.org"; const long gmtOffset_sec = 21600; const int daylightOffset_sec = 21600; void printLocalTime() { struct tm timeinfo; if(!getLocalTime(&timeinfo)){ Serial.println("Failed to obtain time"); return; } Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); ///https://devhints.io/datetime lcd.clear(); lcd.setCursor(0,0); lcd.print(&timeinfo, "%B %d %Y"); lcd.setCursor(0,1); lcd.print(&timeinfo, "%a,%I:%M:%S:%p"); } void setup() { lcd.begin(); lcd.backlight(); lcd.print("internet time"); lcd.setCursor(0,1); Serial.begin(115200); //connect to WiFi Serial.printf("Connecting to %s ", ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(" CONNECTED"); //init and get the time configTime(gmtOffset_sec, daylightOffset_sec, ntpServer); printLocalTime(); //disconnect WiFi as it's no longer needed WiFi.disconnect(true); WiFi.mode(WIFI_OFF); } void loop() { delay(1000); printLocalTime(); }