#include <Arduino.h>
#include <TM1637Display.h>
#define CLK 3
#define DIO 4
TM1637Display display(CLK, DIO);
void setup() 
{
  display.setBrightness(1);   //ความสว่างของหลอด
  display.clear();
  delay(200);
  pinMode(13,OUTPUT);
}
int n,m,s,t;
void loop() 
{
  s = n%60;
  m = n/60;
  t = m*100+s;
 display.showNumberDecEx(n,0b01000000,1,4,0);  //โชว์ตัวเลข
 delay(50);
 display.showNumberDecEx(n,0b00000000,1,4,0);  //โชว์ตัวเลข
 delay(50);
  n++;
 if ((m == 0) && (s == 10))
     digitalWrite(13,0);
 if ((m == 0) && (s == 20))
     digitalWrite(13,0);
 
 
}