DIY声控延时小夜灯

/*
 声控延时开关
 */
int ledPin = 13;       // arduino调试灯
int pbIn = 0;                  // 定义中断引脚为0，也就是D2引脚;
int outPin=11;                //控制继电器引脚
volatile int count = 0;      // 定义中断触发变量
 
// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
 
  pinMode(ledPin, OUTPUT);
  pinMode(outPin, OUTPUT);  
  digitalWrite(outPin, LOW);    // turn the LED off by making the voltage LOW
  count=0;
  //引脚2下降沿触发中断
   attachInterrupt(pbIn, stateChange, FALLING);
}
 
// the loop routine runs over and over again forever:
void loop() {
 
 Serial.println(count);//调试
 delay(1);        // delay in between reads for stability
 if(count>0) 
 {
   //开灯
   digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
   digitalWrite(outPin, HIGH);   // turn the LED on (HIGH is the voltage level)
   delay(1000);//等待读数稳定
   int last=count;
   int ncount=0;
 
   for(int i=0;i<1800;i++)//缺省延时900秒
   {
 
    if(count>last)
    {
     ncount++;
     last=count;
    }
    if((i%6)==0)
    {
      count=0;
      ncount=0;
      last=0;
    }
    //3秒内连敲2下关灯
    if(ncount>=2)
    break;
    delay(500);//延时等待读数稳定
   }
 
 
   digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
   digitalWrite(outPin, LOW);    // turn the LED off by making the voltage LOW
   //等3秒，防止误触发
   delay(3000);
   count=0;
  }
}
void stateChange()
{
  //检测到声音后count加一，一次声音可以触发多次中断
  count++;
}