Sound Sensor

Introduction

The Sound sensor module is a simple microphone. Based on the power amplifier LM386 and the electret microphone, it can be used to detect the sound strength of the environment. The value of output can be adjusted by a potentiometer.

Schematics

• Schematics

Application Ideas

<syntaxhighlight lang="c"> const int ledPin = 12; // the number of the LED pin const int thresholdvalue=400;//The threshold to turn the led on void setup() {

    pinMode(ledPin, OUTPUT); 

}

void loop() {

 int sensorValue = analogRead(A0);//use A0 to read the electrical signal
 if(sensorValue>thresholdvalue)
 digitalWrite(ledPin,HIGH);//if the value read from A0 is larger than 400,then light the LED
 delay(20);
 digitalWrite(ledPin,LOW);

} </syntaxhighlight>

How to buy

Here to buy Sound Sensor on store