SOUND SENSOR

                                 The sound sensor module provides an easy way to detect sound and is generally used for detecting sound intensity. This module can be used for security, switch, and monitoring applications.  It uses a microphone which supplies the input to an amplifier, peak detector and buffer. When the sensor detects a sound, it processes an output signal voltage which is sent to a microcontroller then performs necessary processing. We can interface sound sensor with Arduino to detect the presence of sound waves. 

Application:

• To detect sound in the surroundings.\
• To response to sound and move the robot.
• To response to sound and  turn on circuits.

Sample Project with Arduino:

                                             In this we going to turn ON the LED whenever the sound in surroundings is detected by the sound sensor.

Material required:

• Microphone sound sensor
• Arduino UNO
• Breadboard
• LED
• 220 Ohm resisto
• Jumper wires

Circuit:

Code:

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);
                             
  if (val==HIGH) {   // when the sensor detects a signal above the threshold value, LED flashes
    digitalWrite(ledPin, HIGH);
  }
  else {
    digitalWrite(ledPin, LOW);
  }
}