Arduino Code

 // Includes the Servo library

#include <Servo.h>

// Defines Tirg and Echo pins of the Ultrasonic Sensor

const int trigPin = 11;

const int echoPin = 12;

// Variables for the duration and the distance

long duration;

int distance;

Servo myServo; // Creates a servo object for controlling the servo motor

void setup() {

  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output

  pinMode(echoPin, INPUT); // Sets the echoPin as an Input

  Serial.begin(9600);

  myServo.attach(13); // Defines on which pin is the servo motor attached

}

void loop() {

  // rotates the servo motor from 15 to 165 degrees

  for(int i=15;i<=165;i++){  

  myServo.write(i);

  delay(25);

  distance = calculateDistance();// Calls a function for calculating the distance measured by the Ultrasonic sensor for each degree

  

  Serial.print(i); // Sends the current degree into the Serial Port

  Serial.print(","); // Sends addition character right next to the previous value needed later in the Processing IDE for indexing

  Serial.print(distance); // Sends the distance value into the Serial Port

  Serial.print("."); // Sends addition character right next to the previous value needed later in the Processing IDE for indexing

  }

  // Repeats the previous lines from 165 to 15 degrees

  for(int i=165;i>15;i--){  

  myServo.write(i);

  delay(25);

  distance = calculateDistance();

  Serial.print(i);

  Serial.print(",");

  Serial.print(distance);

  Serial.print(".");

  }

}

// Function for calculating the distance measured by the Ultrasonic sensor

int calculateDistance(){ 

  

  digitalWrite(trigPin, LOW); 

  delayMicroseconds(2);

  // Sets the trigPin on HIGH state for 10 micro seconds

  digitalWrite(trigPin, HIGH); 

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH); // Reads the echoPin, returns the sound wave travel time in microseconds

  distance= duration*0.034/2;

  return distance;

}