#define trigPin 10
#define echoPin 11

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(3, OUTPUT);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  int dulation = pulseIn(echoPin, HIGH);
  Serial.print("Distance in cm: ");
  Serial.println(dulation / 58);




  if (dulation / 58 > 300) {
    digitalWrite(3, 1);
    digitalWrite(4, 0);
    digitalWrite(5, 0);
  } else if (dulation / 58 > 200) {
    digitalWrite(3, 0);
    digitalWrite(4, 1);
    digitalWrite(5, 0);
  } else if (dulation / 58 > 100) {
    digitalWrite(3, 0);
    digitalWrite(4, 0);
    digitalWrite(5, 1);
  } else {
    digitalWrite(3, 0);
    digitalWrite(4, 0);
    digitalWrite(5, 1);
    delay(200);
    digitalWrite(5, 0);
    delay(200);
  }
  
  
}