RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://howtomechatronics.com/projects/arduino-radar-project/ below:

Arduino Radar Project - How To Mechatronics

In this Arduino Tutorial I will show you how you can make this cool looking radar using the Arduino Board and the Processing Development Environment. You can watch the following video or read the written tutorial below for more details.

Overview

All you need for this Arduino Project is an Ultrasonic Sensor for detecting the objects, a small hobbyist Servo Motor for rotating the sensor and an Arduino Board for controlling them. You can watch the following video or read the written tutorial below.[/column]

Components needed for this Arduino Project

You can get these components from any of the sites below:

Ultrasonic Sensor HC-SR04 ………… Amazon / Banggood / AliExpress
Servo Motor……………………………….. Amazon / Banggood / AliExpress
Arduino Board …………………………… Amazon / Banggood / AliExpress
Breadboard and Jump Wires ……… Amazon / Banggood / AliExpress

Disclosure: These are affiliate links. As an Amazon Associate I earn from qualifying purchases.

Building the device

First I made a cardboard stand for connecting the Ultrasonic sensor to the Servo motor. I folded it like it’s shown on the picture below, glued it and secured to the servo motor using a screw like this.

Also I attached a pin header on which I soldered 4 jumper wires for connecting the sensor.

Finally I secured the servo motor to the Arduino Board using an elastic band.

There are also some special mount bracket for the ultrasonic sensor from Banggod. You can get them from the following links:

Ultrasonic Sensor with Mounting Bracket ……… Amazon / AliExpress
Mounting Bracket For Ultrasonic Ranging …….. Banggood

Arduino Radar Circuit Schematics

I connected the Ultrasonic Sensor HC-SR04 to the pins number 10 and 11 and the servo motor to the pin number 12 on the Arduino Board.

Source codes

Now we need to make a code and upload it to the Arduino Board that will enable the interaction between the Arduino and the Processing IDE. For understanding how the connection works click here to visit my Arduino and Processing Tutorial.

Here’s the Arduino Source Code with description of each line of the code:





const int trigPin = 10;
const int echoPin = 11;

long duration;
int distance;

Servo myServo; 

void setup() {
  pinMode(trigPin, OUTPUT); 
  pinMode(echoPin, INPUT); 
  Serial.begin(9600);
  myServo.attach(12); 
}
void loop() {
  
  for(int i=15;i<=165;i++){  
  myServo.write(i);
  delay(30);
  distance = calculateDistance();
  
  Serial.print(i); 
  Serial.print(","); 
  Serial.print(distance); 
  Serial.print("."); 
  }
  
  for(int i=165;i>15;i--){  
  myServo.write(i);
  delay(30);
  distance = calculateDistance();
  Serial.print(i);
  Serial.print(",");
  Serial.print(distance);
  Serial.print(".");
  }
}

int calculateDistance(){ 
  
  digitalWrite(trigPin, LOW); 
  delayMicroseconds(2);
  
  digitalWrite(trigPin, HIGH); 
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH); 
  distance= duration*0.034/2;
  return distance;
}
Code language: PHP (php)

Now we will receive the values for the angle and the distance measured by the sensor from the Arduino Board into the Processing IDE using the SerialEvent() function which reads the data from the Serial Port and we will put the values of the angle and the distance into the variables iAngle and iDistance. These variable will be used for drawing the radar, the lines, the detected objects and some of the text.

For drawing the radar I made this function drawRadar() which consist of arc() and line() functions.

void drawRadar() {
  pushMatrix();
  translate(960,1000); 
  noFill();
  strokeWeight(2);
  stroke(98,245,31);
  
  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();
}Code language: JavaScript (javascript)

For drawing the line that is moving along the radar I made this function drawLine(). Its center of rotation is set with the translate() function and using the line() function in which the iAngle variable is used the line is redrawn for each degree.

void drawLine() {
  pushMatrix();
  strokeWeight(9);
  stroke(30,250,60);
  translate(960,1000); 
  line(0,0,950*cos(radians(iAngle)),-950*sin(radians(iAngle))); 
  popMatrix();
}Code language: JavaScript (javascript)

For drawing the detected objects I made this drawObject() function. It gets the distance from ultrasonic sensor, transforms it into pixels and in combination with the angle of the sensor draws the object on the radar.

void drawObject() {
  pushMatrix();
  translate(960,1000); 
  strokeWeight(9);
  stroke(255,10,10); 
  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();
}Code language: JavaScript (javascript)

For the text on the screen I made the drawText() function which draws texts on particular locations.

All of these functions are called in the main draw() function which repeats all the time and draws the screen. Also here I am using this fill() function with 2 parameters for simulating motion blur and slow fade of the moving line.

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();
}Code language: JavaScript (javascript)

Here’s the final appearance of the radar:

Here’s the complete Processing Source Code of the Arduino Radar:

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 (1920, 1080);
 smooth();
 myPort = new Serial(this,"COM4", 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(960,1000); 
  noFill();
  strokeWeight(2);
  stroke(98,245,31);
  
  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(960,1000); 
  strokeWeight(9);
  stroke(255,10,10); 
  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(30,250,60);
  translate(960,1000); 
  line(0,0,950*cos(radians(iAngle)),-950*sin(radians(iAngle))); 
  popMatrix();
}

void drawText() { 
  
  pushMatrix();
  if(iDistance>40) {
  noObject = "Out of Range";
  }
  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(40);
  text("Object: " + noObject, 240, 1050);
  text("Angle: " + iAngle +" °", 1050, 1050);
  text("Distance: ", 1380, 1050);
  if(iDistance<40) {
  text("        " + iDistance +" cm", 1400, 1050);
  }
  textSize(25);
  fill(98,245,60);
  translate(961+960*cos(radians(30)),982-960*sin(radians(30)));
  rotate(-radians(-60));
  text("30°",0,0);
  resetMatrix();
  translate(954+960*cos(radians(60)),984-960*sin(radians(60)));
  rotate(-radians(-30));
  text("60°",0,0);
  resetMatrix();
  translate(945+960*cos(radians(90)),990-960*sin(radians(90)));
  rotate(radians(0));
  text("90°",0,0);
  resetMatrix();
  translate(935+960*cos(radians(120)),1003-960*sin(radians(120)));
  rotate(radians(-30));
  text("120°",0,0);
  resetMatrix();
  translate(940+960*cos(radians(150)),1018-960*sin(radians(150)));
  rotate(radians(-60));
  text("150°",0,0);
  popMatrix(); 
}
Code language: JavaScript (javascript)

Just change the values in size() function, with your screen resolution.



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 (1920, 1080); 
 smooth();
 myPort = new Serial(this,"COM4", 9600); 
 myPort.bufferUntil('.'); 
 orcFont = loadFont("OCRAExtended-30.vlw");
}

void draw() {
  
  fill(98,245,31);
  textFont(orcFont);
  
  noStroke();
  fill(0,4); 
  rect(0, 0, width, height-height*0.065); 
  
  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(width/2,height-height*0.074); 
  noFill();
  strokeWeight(2);
  stroke(98,245,31);
  
  arc(0,0,(width-width*0.0625),(width-width*0.0625),PI,TWO_PI);
  arc(0,0,(width-width*0.27),(width-width*0.27),PI,TWO_PI);
  arc(0,0,(width-width*0.479),(width-width*0.479),PI,TWO_PI);
  arc(0,0,(width-width*0.687),(width-width*0.687),PI,TWO_PI);
  
  line(-width/2,0,width/2,0);
  line(0,0,(-width/2)*cos(radians(30)),(-width/2)*sin(radians(30)));
  line(0,0,(-width/2)*cos(radians(60)),(-width/2)*sin(radians(60)));
  line(0,0,(-width/2)*cos(radians(90)),(-width/2)*sin(radians(90)));
  line(0,0,(-width/2)*cos(radians(120)),(-width/2)*sin(radians(120)));
  line(0,0,(-width/2)*cos(radians(150)),(-width/2)*sin(radians(150)));
  line((-width/2)*cos(radians(30)),0,width/2,0);
  popMatrix();
}

void drawObject() {
  pushMatrix();
  translate(width/2,height-height*0.074); 
  strokeWeight(9);
  stroke(255,10,10); 
  pixsDistance = iDistance*((height-height*0.1666)*0.025); 
  
  if(iDistance<40){
    
  line(pixsDistance*cos(radians(iAngle)),-pixsDistance*sin(radians(iAngle)),(width-width*0.505)*cos(radians(iAngle)),-(width-width*0.505)*sin(radians(iAngle)));
  }
  popMatrix();
}

void drawLine() {
  pushMatrix();
  strokeWeight(9);
  stroke(30,250,60);
  translate(width/2,height-height*0.074); 
  line(0,0,(height-height*0.12)*cos(radians(iAngle)),-(height-height*0.12)*sin(radians(iAngle))); 
  popMatrix();
}

void drawText() { 
  
  pushMatrix();
  if(iDistance>40) {
  noObject = "Out of Range";
  }
  else {
  noObject = "In Range";
  }
  fill(0,0,0);
  noStroke();
  rect(0, height-height*0.0648, width, height);
  fill(98,245,31);
  textSize(25);
  
  text("10cm",width-width*0.3854,height-height*0.0833);
  text("20cm",width-width*0.281,height-height*0.0833);
  text("30cm",width-width*0.177,height-height*0.0833);
  text("40cm",width-width*0.0729,height-height*0.0833);
  textSize(40);
  text("Object: " + noObject, width-width*0.875, height-height*0.0277);
  text("Angle: " + iAngle +" °", width-width*0.48, height-height*0.0277);
  text("Distance: ", width-width*0.26, height-height*0.0277);
  if(iDistance<40) {
  text("        " + iDistance +" cm", width-width*0.225, height-height*0.0277);
  }
  textSize(25);
  fill(98,245,60);
  translate((width-width*0.4994)+width/2*cos(radians(30)),(height-height*0.0907)-width/2*sin(radians(30)));
  rotate(-radians(-60));
  text("30°",0,0);
  resetMatrix();
  translate((width-width*0.503)+width/2*cos(radians(60)),(height-height*0.0888)-width/2*sin(radians(60)));
  rotate(-radians(-30));
  text("60°",0,0);
  resetMatrix();
  translate((width-width*0.507)+width/2*cos(radians(90)),(height-height*0.0833)-width/2*sin(radians(90)));
  rotate(radians(0));
  text("90°",0,0);
  resetMatrix();
  translate(width-width*0.513+width/2*cos(radians(120)),(height-height*0.07129)-width/2*sin(radians(120)));
  rotate(radians(-30));
  text("120°",0,0);
  resetMatrix();
  translate((width-width*0.5104)+width/2*cos(radians(150)),(height-height*0.0574)-width/2*sin(radians(150)));
  rotate(radians(-60));
  text("150°",0,0);
  popMatrix(); 
}Code language: JavaScript (javascript)

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4