How to Turn ON/OFF the Light with Claps – KY-038

In this tutorial, you will learn how to turn on and off the light with a sound sensor (KY-038) and an Arduino.

Parts Required

• Arduino
• Sound sensor (KY-038)
• Jumper wires
• LED

Circuit

The sensor output used in this tutorial is the digital output (DO).

Code

int soundSensor=2;
int LED=4;
boolean LEDStatus=false;

void setup() {
 pinMode(soundSensor,INPUT);
 pinMode(LED,OUTPUT);

}

void loop() {

  int SensorData=digitalRead(soundSensor); 
  if(SensorData==1){

    if(LEDStatus==false){
        LEDStatus=true;
        digitalWrite(LED,HIGH);
    }
    else{
        LEDStatus=false;
        digitalWrite(LED,LOW);
    }
  }
 } 

References

[1] https://create.arduino.cc/projecthub/iotboys/control-led-by-clap-using-arduino-and-sound-sensor-e31809