void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(14, INPUT);
  pinMode(12, OUTPUT);
  pinMode(16, OUTPUT);
}

void loop() {
  
 digitalWrite(12, HIGH);

  delay(1000);

  digitalWrite(12, LOW);

  float duration=pulseIn(14, HIGH);

  int distance=duration*0.034/2;
  Serial.println(distance);
  if(distance<=200){

    digitalWrite(16, HIGH);

    }else{

    digitalWrite(16, LOW);

    }
  }