งาน ปฏิบัติ 8

Code
#include "LedControl.h"
#define C4  262
#define D4  294
#define E4  330
#define F4  349
#define FS4 370
#define G4  392
#define A4  440
#define B4  494
#define C5  523
#define D5  587
int melody[] = {C4,D4,E4,F4,G4,A4,B4,C5};
float beats[] = {1,1,1,1,1,1,1,1};
int buzzer = 11;
int timestop = 70;
LedControl lc=LedControl(8,10,9,1);

void setup()
{
lc.shutdown(0,false);
lc.setIntensity(0,5); 
lc.clearDisplay(0);
int dl = 500;
pinMode(buzzer, OUTPUT);
int numnote;
numnote = sizeof(melody)/2;
for(int i=0;i<numnote;i++){
  lc.setChar(0,7-i,'-',false);
  tone(buzzer, melody[i],dl*beats[i]);
  delay(dl*beats[i]);
  digitalWrite(buzzer, HIGH);
  delay(timestop);
}
}
void loop() {
}