int sound=34; //PIR Sensor
int sensor=0; //Read the value of sensor
int light=22; //Relay
void setup() {
  Serial.begin(115200);
  pinMode(sound,INPUT);
  pinMode(light,OUTPUT);
}

void loop() {
  sensor=digitalRead(sound);
  if(sensor==1) //sound detected
  {
    Serial.println(sensor);
    Serial.println("ON");
    delay(500);
    digitalWrite(light,1);
  }
  else //not detected
  {
    Serial.println(sensor);
    Serial.println("OFF");
    delay(500);
    digitalWrite(light,0);
  }
}