HC-SR04 Arduino Nano Ultrasonic Sensor and Processing

HC-SR04 Arduino Nano

Arduino HC-SR04 Ultrasonic Sensor and Processing

Parts Required:

– Arduino NANO v3.0
– HC-SR04 Ultrasonic Sensor
– Wires to connect it all together

Connect the components and wires as shown in the two pictures.

chart

Information:

The module includes ultrasonic transmitters, receiver, and control circuit in a single package.

Arduino Code:

// Example by Hisham Marzouk

//Officialhrm.com

int trigPin = 2;//Trig – green Jumper

int echoPin = 3; //Echo – yellow Jumper

long duration, cm, inches;

void setup() {

Serial.begin (9600);

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

}

void loop() {

digitalWrite(trigPin, LOW);

delayMicroseconds(5);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

pinMode(echoPin, INPUT);

duration = pulseIn(echoPin, HIGH);

cm = (duration/2) / 29.1;

inches = (duration/2) / 74;

Serial.print(cm);

Serial.println();

delay(350); }

Download and Install Processing to see The ruler on the screen
Processing is available for Linux, Mac OS X, and Windows.

Processing Code:

//Example by Hisham Marzouk
//www.Officialhrm.com

import processing.serial.*;
import java.awt.event.KeyListener;
import java.awt.Robot;
import guru.ttslib.*;

Serial myPort;
Robot robot;
TTS tts;
String val;
boolean valtrue;
int xy = 0;
int x=0;
PImage bg;
void setup()
{
bg = loadImage(“lside.jpg”);
size(1075,110);
background(bg);
String portName = Serial.list()[0];
myPort = new Serial(this, portName, 9600);
myPort.bufferUntil(‘.’);
try {
robot = new Robot();
}
catch (Exception e) {
e.printStackTrace();
}
}
void draw() {
//reading serial port until \n
String sensorValue = myPort.readStringUntil(‘\n’);
if (sensorValue != null) {
int value = Integer.parseInt(sensorValue.trim());
println(value);
background(bg);
ellipse(value *35.79, 55, 1, 115);
fill(33,77,88);
}
}

Download: Arduino HC-SR04 diagram

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