Microphone Sound Sensor

Sound Sensor

The microphone sound sensor, as the name says, detects sound. It gives a measurement of how loud a sound is.

Sensor modules have a built-in potentiometer to adjust the sensitivity of the digital output pin.

Components Required

• Arduino
• A Sound Sensor
• LED
• 220 ohm Resistors
• Mini Breadboard
• Wires

Schematics

Code

/*  Microphone using arduino Tutorial
 *  www.genbays.com 
 */

int ledPin=13;
int sensorPin=7;
boolean val =0;

void setup(){
  pinMode(ledPin, OUTPUT);
  pinMode(sensorPin, INPUT);
  Serial.begin (9600);
}
  
void loop (){
  val =digitalRead(sensorPin);
  Serial.println (val);
  // when the sensor detects a signal above the threshold value, LED flashes
  if (val==HIGH) {
    digitalWrite(ledPin, HIGH);
  }
  else {
    digitalWrite(ledPin, LOW);
  }
}

Once your you uploaded the code, Make some loud noises and see the status of the LED which is connected to the arduino