#include <Servo.h>
Servo myservo;


#define trigpin 7
#define echopin 6
void setup() {
  pinMode(8, INPUT);
  pinMode(13, OUTPUT);

pinMode(8, OUTPUT);
pinMode(11, INPUT);


  myservo.attach(5);
  Serial.begin(9600); 


}

void loop() {
  
   long duration;
  digitalWrite(8, LOW);
  delayMicroseconds(2);
  digitalWrite(8, HIGH);
  delayMicroseconds(10);
  digitalWrite(8, LOW);
  duration = pulseIn(11,HIGH);
  float distance = duration * 0.5 * 343 / 10000 ;
  Serial.println(distance);
  delay(500);
  if(distance<200){
    digitalWrite(13, HIGH);
      myservo.write(180);
  }
    else{
      digitalWrite(13, LOW);
       myservo.write(0);
    }
  }