void setup() {
  Serial.begin(115200);
  pinMode(17, INPUT);
  pinMode(5, OUTPUT);
  pinMode(25, OUTPUT);

}
  

void loop() {
 digitalWrite(5, HIGH);
 delay(1000);
 digitalWrite(5, LOW);
 float duration=pulseIn(17,HIGH);
 int distance=duration*0.034/2;
 if(distance>=200){
  digitalWrite(25, HIGH);
 }
 else{
  digitalWrite(25, LOW);
 }
 Serial.println(distance);
 delay(1000);
}