int i=6;
void setup() {
// put your setup code here, to run once:
pinMode(i,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
tone(i,300);//打开蜂鸣器
delay(1000);
noTone(i);//关闭蜂鸣器
delay(1000);
tone(i,500);
delay(1000);
noTone(i);
delay(1000);
tone(i,700);
delay(1000);
noTone(i);
delay(1000);
}
其中tone里面的第二个参数是频率的大小,越大音调越高