int triger =17;
  int echo =27;
  int led1 =12;
  int led2 =13;
  void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  pinMode(triger,OUTPUT);
  pinMode(echo, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  }

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(triger, HIGH);
  delay(100);
  digitalWrite(triger, LOW);
  int reading = pulseIn(echo, HIGH);
  int distance = (reading*0.032/2);
  Serial.println(distance);
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
  if (distance > 200){
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
  }else{
    digitalWrite(led2, HIGH);
    digitalWrite(led1, LOW);
  }
  delay(100); // this speeds up the simulation
}