#include <Servo.h>;
const int trigPin = 8;
const int echoPin = 7;
const int ledPin=12;
Servo myservo;
int servoPos=90;

// defines variables
long duration;
int distance;
void setup() {
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  pinMode(ledPin, OUTPUT);
  myservo.attach(13);
  Serial.begin(9600); // Starts the serial communication
}
void loop() {
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = (duration * 0.0343) / 2;
  // Prints the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.println(distance);
  delay(200);


  if(distance<=150 && distance>=100){
    servoPos=map(distance,2,200,0,180);
    myservo.write(servoPos);
    delay(15);
  
  }
  else{
    myservo.write(90);
  }


}