#define ECHO_PIN 2
#define TRIG_PIN 3
#define relay1 13
#define relay 12 
#define Bigsound 4

void setup() {
  Serial.begin(115200);
  pinMode(relay1, OUTPUT);
   pinMode(relay2, OUTPUT);
    pinMode(Bigsound, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

void loop() {
  int BSvalue=digitalRead(Bigsound);
  float distance = readDistanceCM();

if(distance<=10){
digitalWrite(relay1, HIGH);
delay(500);
digitalWrite(relay1, LOW);
delay(500);
digitalWrite(relay1, HIGH);
delay(500);
digitalWrite(relay1, LOW);


}else{
digitalWrite(relay1, LOW);

}if(BSvalue==HIGH){
digitalWrite(relay2, HIGH);
delay(500);
digitalWrite(relay2, LOW);
delay(500);
digitalWrite(relay2, HIGH);
delay(500);
digitalWrite(relay2, LOW);
delay(500);

}

}