Arduino 麦克风传感器实验

代码

int analogPin = A0; //
int val = 0; // variable to store the value read
int value = 0;
#define ledPin 9

#define MIC_MAX 100

void setup()
{
  Serial.begin(9600); // setup serial
  pinMode(ledPin, OUTPUT);
}

void loop()
{
  val = analogRead(analogPin); // read the input pin

  Serial.print("MIC=");
  Serial.println(val); // debug value

  if (val > MIC_MAX)
  {
    digitalWrite(ledPin, HIGH);
    delay(5000);
  }
  else
  {
    digitalWrite(ledPin, LOW);
  }

  delay(100);
}