KY-037 Microphone sound sensor (high sensitivity)

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/*
  KY-037 High Sensitivity Sound Sensor ("Big Sound") - Arduino example
  Reads both module outputs: the digital output (DO) switches the Arduino's
  on-board LED when sound crosses the potentiometer-set threshold, while the
  analog output (AO) is printed to the Serial Monitor/Plotter as the raw level.
*/

int digitalPin = 7;   // KY-037 digital interface (DO)
int analogPin = A0;   // KY-037 analog interface (AO)
int ledPin = 13;      // Arduino on-board LED pin
int digitalVal;       // digital reading
int analogVal;        // analog reading

void setup()
{
  pinMode(digitalPin, INPUT);
  pinMode(analogPin, INPUT);
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop()
{
  // Read the digital interface
  digitalVal = digitalRead(digitalPin);

  if (digitalVal == HIGH)
  {
    digitalWrite(ledPin, HIGH); // Turn ON Arduino's LED
  }
  else
  {
    digitalWrite(ledPin, LOW);  // Turn OFF Arduino's LED
  }

  // Read the analog interface
  analogVal = analogRead(analogPin);
  // Print the analog value to the serial monitor/plotter
  Serial.println(analogVal);
}

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