OBJECT FINDER
using
ARDUINO UNO
and
PROCESSING DEVELOPMENT ENVIRONMENT
Overview
This is a object finder using Arduino uno and Processing also use Ultrasonic sensor for detecting and measuring an object
Parts Requirements
- Arduino uno click to Shop new one
- HC-SR04 Ultrasonic sensor click to Shope this
- Small Servo motor click to Shop this
- Jumber wires click to Shop this
- Breadboard click to shop this
Software Requirements
- Arduino IDE click here to download
- Processing 3 click here to download
Here is the Arduino code
/* The code is written for Arduino Radar system
* using HC-SR04 && Arduino
* modifyed by Sreekanth.K.R 2016
* www.diysundayprojects.blogspot.com
* HC-SR04 is a ultasonic sensor they has 4 pins - VCC,Trig,Echo,GND;
* HC-SR04 Arduino
* VCC ------- +5V
* Trig ------ 12
* Echo ------ 11
* GND ------- GND
* And also connect the Servo signal pin / yellow to Arduino 9th pin
*/
#include<Servo.h> // Including the servo library
Servo myServo; // Creating a Servo object
const int trigPin = 12; // defining pin variables
const int echoPin = 11;
int distance,c; // integer variable for storing distance value that get from the sensor
long duration; // long variables used to store the travel time ""
void setup(){
pinMode(trigPin,OUTPUT);
pinMode(echoPin,INPUT);
Serial.begin(9600); // Starting the Serial communication for showing the result on the computer
myServo.attach(9);
}
int calculateDistance(){ // crate a function for calculating the distance from the sensor
digitalWrite(trigPin,LOW);
delayMicroseconds(2);
digitalWrite(trigPin,HIGH);
delayMicroseconds(10);
digitalWrite(trigPin,LOW);
duration = pulseIn(echoPin,HIGH);
distance = duration*0.034/2;
return distance;
}
void loop(){
for(c=0;c<=180;c++){ // for rotating the servo 0' - 180'
myServo.write(c);
delay(30);
distance = calculateDistance(); // calling the previuosly defined function
Serial.print(c); // sending the angle / Servo position
Serial.print(","); // this charactor for indexing
Serial.print(distance);// sending the distance that return from the function
Serial.print("."); // this charactor for indexing
}
for(c=180;c>0;c--){ // for rotating the servo 180' - 0'
myServo.write(c);
delay(30);
distance = calculateDistance();
Serial.print(c);
Serial.print(",");
Serial.print(distance);
Serial.print(".");
}
}
Here is the processing code
//code from www.howtomechatronics.com
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,
index1=0,
index2=0;
PFont orcFont;
void setup()
{
size (1220,696);
smooth();
myPort = new Serial(this,"COM4", 9600); // you can change the COM port
myPort.bufferUntil('.');
orcFont = loadFont("ComicSansMS-Bold-35.vlw");
}
void draw() {
fill(100,245,30);
textFont(orcFont);
noStroke();
fill(0,4);
rect(0, 0, width, height-height*0.030);
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(0,255,0);
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(30,255,24);
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);
noStroke();
rect(0, height-height*0.0648, width, height);
fill(98,245,31); textSize(20);
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);
text("Sunday Projects",width-width*0.2234,height-height*0.8865);
textSize(40);
text("Object: " + noObject, width-width*0.875, height-height*0.0150);
text("Angle: " + iAngle +" °", width-width*0.48, height-height*0.0150);
text("Distance: ", width-width*0.26, height-height*0.0150);
if(iDistance<40) {
text(" " + iDistance +" cm", width-width*0.125, height-height*0.0150);
}
textSize(30); fill(255,0,0);
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();
}
Important thing !
You'll face a font problem in the code runnig
Don't worry please follow me ....
please click Tools >> Create Font
And choose a Font you like
Then put the name in loadFond(" ....."); function
Then run the program.........
Thank You
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