#define Trig 5
#define Echo 6
long getTime() {
  digitalWrite(Trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(Trig, LOW);
  return pulseIn(Echo, HIGH);
}
void setup() {
  pinMode(Echo, INPUT);
  pinMode(Trig, OUTPUT);
  pinMode(2, OUTPUT);
}
void loop() {
  float dis = round(getTime() / 58.4767);
  if (dis < 200)
    digitalWrite(2, HIGH);
  else
    digitalWrite(2, LOW);
  delay(200);
}