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int time = 5000; //5 seconds now but you can change this number for how long the led needs to be ON
const int soundpin = A2; //the analog pin A0(sound sensor) to arudino A2
const int threshold = 525; // sets threshold for sound sensor (scale between 0-1024 for analog)
const int RELAY_PIN_1 = 3;
int state = 0; //relay pin is at digital pin 3
void setup() {
  Serial.begin(9600);
  pinMode(RELAY_PIN_1, OUTPUT); //initialize digital pin 3(relay) as output
  pinMode(soundpin, INPUT);
  digitalWrite(RELAY_PIN_1, HIGH);//initialise analog pin A2 as input
}
void loop() {
  int soundsens = analogRead(soundpin);
  Serial.println(soundsens);// read analog data from sensor
  if (soundsens <= threshold && state==0)
  { digitalWrite(RELAY_PIN_1, LOW); //if Clapped  , Then the LED is turned "ON"
    Serial.print("CLAP DETECTED"); //show the temp in the serial montior (press shift+ctrl+m)
    Serial.print("\n");//go to next line
    delay(500);
    state = 1;
  }
  soundsens = analogRead(soundpin);
   if (soundsens <= threshold && state == 1) {
    digitalWrite(RELAY_PIN_1, HIGH);
    delay(500);//if the no CLAP , then the LED is turned off
    state = 0;
  }
}