DigitalClock/CLOCK.ino at main · PranavKumarKR/DigitalClock · GitHub

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#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
int hrs = 12;
int mins = 0;
int sec = 0;
int TIME = 0;
const int bhrs = A4;
const int bmins = A5;
int state1 = 0;
int state2 = 0;
void setup()
{
  lcd.begin(16, 2);
  pinMode(bhrs, INPUT_PULLUP);
  pinMode(bmins, INPUT_PULLUP);
}
void loop()
{
  lcd.setCursor(0, 0);
  sec = sec + 1;
  lcd.print("TIME:" );
  lcd.print(hrs);
  lcd.print(":");
  lcd.print(mins);
  lcd.print(":");
  lcd.print(sec);

  if (TIME ==12) {
    lcd.print(" PM");
  }
  if (TIME == 24) TIME = 0;
  delay(800);
  lcd.clear();
  if (sec == 60)
  {
    sec = 0;
    mins = mins + 1;
  }
  if (mins == 60)
  {
    mins = 0;
    hrs = hrs + 1;
    TIME = TIME + 1;
  }
  if (hrs == 13)
  {
    hrs = 1;
  }
lcd.setCursor(0, 1);
   lcd.print("Simple Clock ");
  state1 = digitalRead(bhrs);
  if (state1 == 0)
  {
    hrs = hrs + 1;
    TIME = TIME + 1;
    if (TIME==12){
      lcd.print(" PM");
    }
    if (TIME == 24) TIME = 0;
    if (hrs == 13)
     hrs = 1;
  }
  state2 = digitalRead(bmins);
  if (state2 == 0)
  {
    sec = 0;
    mins = mins + 1;
  }
}