#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x3F for a 16 chars and 2 line display
int s,m,h;
void setup() {
  Serial.begin(115200);
 
  lcd.init();
  lcd.clear();         
  lcd.backlight();      // Make sure backlight is on
  
  // Print a message on both lines of the LCD.
  
}

void loop() 
{
 if(s>59)
 {
  s=0;
  m++;
  if(m>59)
  {
   m=0;h++;
   if(h>23) h=0;
  } 
 }

 lcd.setCursor(10,1);//第一列10個
 lcd.print(s/10);
 lcd.setCursor(11,1);//第一列11個
 lcd.print(s%10);

 lcd.setCursor(7,1);//第一列7個
 lcd.print(m/10);
 lcd.setCursor(8,1);//第一列8個
 lcd.print(m%10);
 
 lcd.setCursor(4,1);//第一列4個
 lcd.print(h/10);
 lcd.setCursor(5,1);//第一列5個
 lcd.print(h%10);
 delay(1000);
 s=s+1;




  

}