目录

一.效果展示

二.基本原理

三.电路图

 四.代码

---

 

一.效果展示

二.基本原理

利用arduino uno单片机实现对蜂鸣器振动频率的调节，基于PWM控制系统通过代码实现控制。

三.电路图

 

 四.代码

//main.uno
#define Buzzer 2int PotBuffer = 0;
int delaytime=0;
void sound(int PotBuffer,int delaytime)
{float i=0.0;while(true){i+=float(PotBuffer);digitalWrite(Buzzer,HIGH);		//设置输出高电平delayMicroseconds(PotBuffer);	//延时PotBuffer值 usdigitalWrite(Buzzer,LOW);			//设置输出低电平delayMicroseconds(200);if((i/100)>float(delaytime)){break;}  }}
void delayplay(int ind_len,int PotBuffer,int delaytime)
{for(int ind=0;ind<ind_len;ind++){sound(PotBuffer,delaytime);delay(100);}
}
void setup()
{pinMode(Buzzer,OUTPUT);	//蜂鸣器引脚设定为输出
}void loop()
{//sound(88,100);								//do//sound(84,100);								//re//sound(80,100);								//mi//sound(78,100);								//fa//sound(76,100);								//so//sound(72,100);								//la//sound(68,100);int dt=1;delayplay(1,104,500*dt);delayplay(1,100,500*dt);delayplay(1,88,2000*dt);delayplay(1,84,500*dt);delayplay(1,88,1500*dt);delayplay(1,118,400*dt);delayplay(1,94,800*dt);delayplay(1,104,5000*dt);delayplay(1,88,500*dt);delayplay(1,84,500*dt);delayplay(1,80,2000*dt);delayplay(1,72,500*dt);delayplay(1,76,1500*dt);delayplay(1,80,300*dt);delayplay(1,84,800*dt);delayplay(1,88,2000*dt);while(true){}}