#include <LiquidCrystal_I2C.h>


int col = 16;
int row = 2;
LiquidCrystal_I2C lcd(0x27, col, row);

#define start 3


int n = 0;
int s = 0;
int m = 0;
int h = 0;

void starttime() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Time : ");
  lcd.print(h);
  lcd.print(":");
  lcd.print(m);
  lcd.print(":");
  lcd.print(s);

  lcd.setCursor(0, 1);
  lcd.print("Time = ");
  lcd.print(m);
  lcd.print(" menit");

  s = s + 1;
  n = n + 1;
  delay(1000);

  if (s == 60) {
    m = m + 1;
    s = 0;
  }
  if (m == 60) {
    m = 0;
    h = h + 1;
  }

}
void stoptime() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Time : ");
  lcd.print(h);
  lcd.print(":");
  lcd.print(m);
  lcd.print(":");
  lcd.print(s);

  lcd.setCursor(0, 1);
  lcd.print("Time = ");
  lcd.print(m);
  lcd.print(" Menit");
  delay(1000);
}

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  Serial.begin(9600);
  pinMode(start, INPUT);
  digitalWrite(start, LOW);
}


void loop() {
  if (int l = digitalRead(start) == HIGH) {
    starttime();
  } else {
    stoptime();
  }

}