Overview
Things
Story

Arduino Radar Rotates for 150°
Processing (code)
Create Display
Display Example

Published May 27, 2017 © GPL3+

Arduino Radar - Version 2.0

This project is an Arduino radar. It is a simulation of a radar.

BeginnerProtip1 hour15,401

Things used in this project

Hardware components

Arduino UNO

Ultrasonic Sensor - HC-SR04 (Generic)

servo motor

Jumper wires (generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

3D Printer (generic)

Story

Arduino Radar Rotates for 150°.

It measures the distance from the object to ultrasonic sensor.

It displays the distance graphically on the screen.

If the object is close to the sensor, displays will draw red line.

If the object is far or if there is nothing in front of the sensor, the display will draw blue lines.

Processing (code):

Create Display

To create a display that shows the position of the object and distance, I have to draw on a gray background coordinate system quarters.

Function drawRadar(); draws white lines that represent the coordinate system.

This is translated with the center for 700px x and y axes.

Display Example

After switching on this function the display looks like this:

drawObject(); function draws a red line if the object is close to the sensor.

drawLine(); function draws a blue line if the object is far.

1 / 3

drawText(); function prints text on the screen.

Schematics

Code

#include <Servo.h> 
Servo myServo; 
int trigPin = 10;
int echoPin = 11;
long duration;
int distance;

void setup() {
  Serial.begin(9600);
  myServo.attach(12); 
  pinMode(trigPin, OUTPUT); 
  pinMode(echoPin, INPUT); 
}

void loop() {
 print_serial();
}
void print_serial(){
  for(int i=165;i>15;i--){  
  myServo.write(i);
  delay(30);
  distance = measures_the_distance();
  Serial.print(i);
  Serial.print(",");
  Serial.print(distance);
  Serial.print(".");
  }
  for(int i=15;i<=165;i++){  
  myServo.write(i);
  delay(30);
  distance = measures_the_distance();
  Serial.print(i); 
  Serial.print(","); 
  Serial.print(distance); 
  Serial.print("."); 
  }
}
int measures_the_distance(){ 
  digitalWrite(trigPin, LOW); 
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH); 
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH); 
  distance= duration*0.034/2;
  return distance;
}

import processing.serial.*; 
import java.awt.event.KeyEvent; 
import java.io.IOException;
Serial myPort;
String angle="";
String distance="";
String data="";
String noObject;
float pixsDistance;
int iAngle, iDistance;
int index1=0;
int index2=0;
PFont orcFont;

void setup() {
 size (1900,1200);
 smooth();
 myPort = new Serial(this,"COM6", 9600); 
 myPort.bufferUntil('.'); 
}

void draw() {
  
  fill(98,245,31);
  noStroke();
  fill(0,4); 
  rect(0, 0, width, 1010); 
  
  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(700,700); 
  noFill();
  strokeWeight(2);
  stroke(255,245,255);
  // draws the arc lines
  arc(0,0,1800,1800,PI,TWO_PI);
  arc(0,0,1400,1400,PI,TWO_PI);
  arc(0,0,1000,1000,PI,TWO_PI);
  arc(0,0,600,600,PI,TWO_PI);
 
  line(-960,0,960,0);
  line(0,0,-960*cos(radians(30)),-960*sin(radians(30)));
  line(0,0,-960*cos(radians(60)),-960*sin(radians(60)));
  line(0,0,-960*cos(radians(90)),-960*sin(radians(90)));
  line(0,0,-960*cos(radians(120)),-960*sin(radians(120)));
  line(0,0,-960*cos(radians(150)),-960*sin(radians(150)));
  line(-960*cos(radians(30)),0,960,0);
  popMatrix();
}
void drawObject() {
  pushMatrix();
  translate(700,700);
  strokeWeight(9);
  stroke(255,0,0); 
  pixsDistance = iDistance*22.5;
  if(iDistance<40)
     line(pixsDistance*cos(radians(iAngle)),-pixsDistance*sin(radians(iAngle)),950*cos(radians(iAngle)),-950*sin(radians(iAngle)));
  popMatrix();
}
void drawLine() {
  pushMatrix();
  strokeWeight(9);
  stroke(30,10,250);
  translate(700,700); 
  line(0,0,950*cos(radians(iAngle)),-950*sin(radians(iAngle))); 
  popMatrix();
}

void drawText() {
  
  pushMatrix();
  fill(0,0,0);
  noStroke();
  rect(0, 1010, width, 600);
  textSize(25);
  fill(255,255,255);
  translate(800,650);
  rotate(-radians(-60));
  text("30°",0,0);
  resetMatrix();
  translate(740,600);
  rotate(-radians(-30));
  text("60°",0,0);
  resetMatrix();
  translate(680,590);
  rotate(radians(0));
  text("90°",0,0);
  resetMatrix();
  translate(620,620);
  rotate(radians(-30));
  text("120°",0,0);
  resetMatrix();
  translate(590,680);
  rotate(radians(-60));
  text("150°",0,0);
resetMatrix();
  translate(50,650);
  rotate(radians(0));
  fill(5,0,0);
  text("PoliArdo team Serbia",2,5);
    fill(255,255,255);
  text("PoliArdo team Serbia",0,0);
  popMatrix(); 
}

Credits

MakerRobotics

6 projects • 134 followers

Arduino Radar - Version 2.0

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Arduino Radar Rotates for 150°.

Processing (code):

Create Display

Display Example

Custom parts and enclosures

Mask and stand for ultrasonic sensor

Schematics

Arduino connection components

Code

Arduino IDE code

Processing code

Credits

MakerRobotics

Comments

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Arduino Radar - Version 2.0

Arduino Radar - Version 2.0

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Arduino Radar Rotates for 150°.

Processing (code):

Create Display

Display Example

Custom parts and enclosures

Mask and stand for ultrasonic sensor

Schematics

Arduino connection components

Code

Arduino IDE code

Processing code

Credits

MakerRobotics

Comments

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