Radar Robot Based on Arduino

Radar is used in many places like military shipa, aeroplan etc,. For recognition of obstacle. Also it helps in security system.

Arduino uno × 1
Ultrasonic sensor ×1
Servo motor ×1
Mini breadboard×1
Some jumper wires
Some pieces of cardboard

Here we can use mini breadboard

Here we have to use two code for display radar.
we have to use processing app also.

Arduino ide code

#include .
// Defines Tirg and Echo pins of the Ultrasonic Sensor
const int trigPin = 10;
const int echoPin = 11;
// 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(12); // 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(30);
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(30);
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;
}

processing code

import processing.serial.*;
import java.awt.event.KeyEvent;
import java.io.IOException;


Serial myPort;
String angle="";
String distance="";
String data="";
String noObject;
float pixelsDistance;
int iAngle,iDistance;
int index1=0,index2=0;
PFont orcFont;

void setup()
{
size(1496,900);
smooth();
myPort=new Serial(this,"COM3",9600);
myPort.bufferUntil('.');
orcFont=loadFont("OCRAExtended-30.vlw");
}

void draw()
{
fill(98,245,31);
textFont(orcFont);
noStroke();
fill(0,4);
rect(0,0,width,1010);

fill(98,245,31);

drawRadar();
drawLine();
drawObject();
drawText();
}

void serialEvent(Serial myPort)
{
data=myPort.readStringUntil('.');
data=data.substring(0,data.length()-1);

index1=data.indexOf(",");
angle=data.substring(0,index1);
distance=data.substring(index1+1,data.length());

iAngle=int(angle);
iDistance=int(distance);
}

void drawRadar(){
pushMatrix();
translate(760,800);
noFill();
strokeWeight(2);
stroke(98,245,31);
arc(0,0,1400,1400,PI,TWO_PI);
arc(0,0,1100,1100,PI,TWO_PI);
arc(0,0,800,800,PI,TWO_PI);
arc(0,0,500,500,PI,TWO_PI);
line(-760,0,760,0);
line(0,0,-760*cos(radians(30)),-760*sin(radians(30)));
line(0,0,-760*cos(radians(60)),-760*sin(radians(60)));
line(0,0,-760*cos(radians(90)),-760*sin(radians(90)));
line(0,0,-760*cos(radians(120)),-760*sin(radians(120)));
line(0,0,-760*cos(radians(150)),-760*sin(radians(150)));
line(-760*cos(radians(30)),0,760,0);
popMatrix();
}


void drawObject() {
pushMatrix();
translate(760,800); // moves the starting coordinats to new location
strokeWeight(9);
stroke(255,10,10); // red color
pixelsDistance = iDistance*22.5; // covers the distance from the sensor from cm to pixels
// limiting the range to 40 cms
if(iDistance<40){
// draws the object according to the angle and the distance
line(pixelsDistance*cos(radians(iAngle)),-pixelsDistance*sin(radians(iAngle)),750*cos(radians(iAngle)),-750*sin(radians(iAngle)));
}
popMatrix();
}

void drawLine()
{
pushMatrix();
strokeWeight(9);
stroke(30,250,60);
translate(760,800);
line(0,0,750*cos(radians(iAngle)),-750*sin(radians(iAngle)));
popMatrix();

}

void drawText()
{
pushMatrix();
if(iDistance>40)
{
noObject="Out ofRange";
}
else{
noObject="In Range";
}
fill(0,0,0);
noStroke();
rect(0, 1010, width, 1080);
fill(98,245,31);
textSize(25);
text("10cm",1180,990);
text("20cm",1380,990);
text("30cm",1580,990);
text("40cm",1780,990);
textSize(30);
text("Object: " + noObject,15,100);
text("Angle: " + iAngle +" °",400, 50);
text("Distance: ", 13,50);
if(iDistance<40) {
text(" " + iDistance +" cm",30,50);
}
textSize(15);
fill(98,245,60);
translate(761+760*cos(radians(30)),782-760*sin(radians(30)));
rotate(-radians(-60));
text("30°",0,0);
resetMatrix();
translate(754+760*cos(radians(60)),784-760*sin(radians(60)));
rotate(-radians(-30));
text("60°",0,0);
resetMatrix();
translate(745+760*cos(radians(90)),790-760*sin(radians(90)));
rotate(radians(0));
text("90°",0,0);
resetMatrix();
translate(735+760*cos(radians(120)),803-760*sin(radians(120)));
rotate(radians(-30));
text("120°",0,0);
resetMatrix();
translate(740+760*cos(radians(150)),818-760*sin(radians(150)));
rotate(radians(-60));
text("150°",0,0);
popMatrix();
}

Check the com in processing app and resolution,