Arduino clock

• Arduino uno

• 1602 LCD display

• A-Ds1307 clock module

• jumper wires

For LCD display

• VCC = 5V

• GND = GND

• SDA = A4

• SCL = A5

For clock module

• GND = GND

• VCC = 5V

• SDA = A4

• SCL =A5

#include <LCD.h>

#include <LiquidCrystal.h>

#include <LiquidCrystal_I2C.h>

#include <LiquidCrystal_SI2C.h>

#include <RTClib.h>

RTC_DS1307 rtc;

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

char daysOfTheWeek[7][12] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};

void setup ()

{

Serial.begin(9600);

lcd.begin (16,2); // initialize the lcd

lcd.backlight();//To Power ON the back light

if (! rtc.begin())

{

lcd.print("Couldn't find RTC");

while (1);

}

if (! rtc.isrunning())

{

lcd.print("RTC is NOT running!");

}

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));//auto update from computer time

//rtc.adjust(DateTime(2020, 1, 21, 3, 0, 0));// to set the time manualy

}

void loop ()

{

DateTime now = rtc.now();

lcd.setCursor(0, 1);

lcd.print("TIME");

lcd.print(" ");

lcd.print(now.hour());

lcd.print(':');

lcd.print(now.minute());

lcd.print(':');

lcd.print(now.second());

lcd.print(" ");

lcd.setCursor(0, 0);

lcd.print("DATE");

lcd.print(" ");

//lcd.print(daysOfTheWeek[now.dayOfTheWeek()]);

//lcd.print(" ");

lcd.print(now.day());

lcd.print('/');

lcd.print(now.month());

lcd.print('/');

lcd.print(now.year());

lcd.print(" ");

}