#include <Servo.h>
#include <Ultrasonic.h>
const int trigPin = 8;
const int echoPin = 9;
const int servoPin = 7;


Servo servo;

float duration_us, distance_cm;

void setup ()
{
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  servo.attach(servoPin);
  servo.write(0);
  

  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
}

void loop () 
{
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  long duration = pulseIn(echoPin, HIGH);

  int distance = duration * 0.0343 / 2;
  
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  
  delay(100);

  if (distance>100)
  {
   digitalWrite(10, LOW);
   digitalWrite(11, HIGH);
   }

   else
   {
   digitalWrite(10, HIGH);
   digitalWrite(11, LOW);
   }
     if (distance<100)
  {
   servo.write(90);
  }
  else
   {
   servo.write (0);
   }
}