ON/OFF LED menggunakan Android dan bluetooth module - Arduino project

Assalamualaikum wbt kepada pembaca blog saya yang saya hormati...

Bersyukur kepadaNya kerana hari ini masih diberi ruang untuk memberikan dan berkongsi lagi sedikit ilmu yang dipinjamkan kepada saya. Pada entri kali ini, saya ingin berkongsi cara untuk ON/OFF LED menggunakan bluetooth module Arduino yang dikawal menggunakan handphone Android anda.

Bahan yang diperlukan

1. Arduino board

2. Bluetooth module (HC-06 for arduino)

3. Breadboard

4. Jumper atau wire

5. Handphone Android

Software yang diperlukan

1. Arduino IDE

2. AMR Voice Arduino (untuk android phone) Boleh download di sini 

Bluetooth module HC-06

Step 1 (wiring bluetooth module)

VCC>>>>3.3v pin
GND>>>>GND pin
TXD>>>>RXD pin
RXD>>>>TXD pin

1. VCC>wire merah 2. GND>wire hitam 3. TXD> wire kuning 4. RXD>wire kelabu

Step 2 (wiring LED)

LED 1 To Pin 2
LED 2 To Pin 3
LED 3 To Pin 4
LED 4 To Pin 5
LED 5 To Pin 6

1. VCC>wire merah 2. GND>wire hitam 3. TXD> wire kuning 4. RXD>wire kelabu

Step 3 (ON/OFF LED guna Android)
1. Buka AMR Voice Arduino 
2. "Connect Robot" Password untuk bluetooth module HC-06 (1234)
3. Tunggu sehingga "Connected to BT-Module (HC-06)"
4. Tap on the mic icon dan cakapkan command anda (arahan)

AMR Voice interface

Coding Arduino

//Voice Activated Arduino (Bluetooth + Android)
//Feel free to modify it but remember to give credit

String voice;
int
led1 = 2, //Connect LED 1 To Pin #2
led2 = 3, //Connect LED 2 To Pin #3
led3 = 4, //Connect LED 3 To Pin #4
led4 = 5, //Connect LED 4 To Pin #5
led5 = 6; //Connect LED 5 To Pin #6
//--------------------------Call A Function-------------------------------// 
void allon(){
     digitalWrite(led1, HIGH);
     digitalWrite(led2, HIGH);
     digitalWrite(led3, HIGH);
     digitalWrite(led4, HIGH);
     digitalWrite(led5, HIGH);
}
void alloff(){
     digitalWrite(led1, LOW);
     digitalWrite(led2, LOW);
     digitalWrite(led3, LOW);
     digitalWrite(led4, LOW);
     digitalWrite(led5, LOW);
}
//-----------------------------------------------------------------------// 
void setup() {
  Serial.begin(9600);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
}
//-----------------------------------------------------------------------// 
void loop() {
  while (Serial.available()){  //Check if there is an available byte to read
  delay(10); //Delay added to make thing stable
  char c = Serial.read(); //Conduct a serial read
  if (c == '#') {break;} //Exit the loop when the # is detected after the word
  voice += c; //Shorthand for voice = voice + c
  } 
  if (voice.length() > 0) {
    Serial.println(voice);
//-----------------------------------------------------------------------//   
  //----------Control Multiple Pins/ LEDs----------// 
       if(voice == "*all on") {allon();}  //Turn Off All Pins (Call Function)
  else if(voice == "*all off"){alloff();} //Turn On  All Pins (Call Function)
 
  //----------Turn On One-By-One----------//
  else if(voice == "*tv on") {digitalWrite(led1, HIGH);}
  else if(voice == "*fan on") {digitalWrite(led2, HIGH);}
  else if(voice == "*computer on") {digitalWrite(led3, HIGH);}
  else if(voice == "*bedroom lights on") {digitalWrite(led4, HIGH);}
  else if(voice == "*bathroom lights on") {digitalWrite(led5, HIGH);}
  //----------Turn Off One-By-One----------//
  else if(voice == "*tv off") {digitalWrite(led1, LOW);}
  else if(voice == "*fan off") {digitalWrite(led2, LOW);}
  else if(voice == "*computer off") {digitalWrite(led3, LOW);}
  else if(voice == "*bedroom lights off") {digitalWrite(led4, LOW);}
  else if(voice == "*bathroom lights off") {digitalWrite(led5, LOW);}
//-----------------------------------------------------------------------// 
voice="";}} //Reset the variable after initiating 

Video

* respon LED saya lambat sedikit kerana saya menggunakan handphone Android lama yang agak lambat sedikit.

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HC-SR04 Ultrasonic sensor Arduino (2)

Alhamdulillah, masih diberi kesempatan untuk bernafas

Pada entri kali ini saya ingin nebyambung entri sebelum ini bagaimana untuk menggunakan ultrasonic sensor pada Arduino anda. Berbeza sedikit pada projek kali ini, output daripada ultrasonic sensor kita akan dikeluarkan pada screen PC anda dalam bentuk bacaan. Pada entri sebslum ini, output ultrasonic sensor diterjemahkan dalam bentuk gelombang warna pada screen PC anda. Mari kita mulakan.

Bahan yang diperlukan

1. Arduino board

2. HC-Sr04 ultrasonic sensor

3. Breadboard

4. Jumper atau wire

Software yang diperlukan

1. Arduino IDE

Cara untuk keluarkan reading pada PC
buka Arduino IDE > Tools > serial monitor

Wiring

* VCC connection of the sensor attached to +5V 
* GND connection of the sensor attached to ground * TRIG connection of the sensor attached to digital pin 2 * ECHO connection of the sensor attached to digital pin 4

Lakaran daripada fritzing

nilai bacaan sensor di screen PC

Coding Arduino

/* HC-SR04 Sensor
https://www.dealextreme.com/p/hc-sr04-ultrasonic-sensor-distance-measuring-module-133696
This sketch reads a HC-SR04 ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.
The circuit:
* VCC connection of the sensor attached to +5V
* GND connection of the sensor attached to ground
* TRIG connection of the sensor attached to digital pin 2
* ECHO connection of the sensor attached to digital pin 4
Original code for Ping))) example was created by David A. Mellis
Adapted for HC-SR04 by Tautvidas Sipavicius
This example code is in the public domain.
*/
 
 
const int trigPin = 2;
const int echoPin = 4;
 
void setup() {
// initialize serial communication:
Serial.begin(9600);
}
 
void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, inches, cm;
 
// The sensor is triggered by a HIGH pulse of 10 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(trigPin, OUTPUT);
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
 
// Read the signal from the sensor: a HIGH pulse whose
// duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(echoPin, INPUT);
duration = pulseIn(echoPin, HIGH);
 
// convert the time into a distance
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);
Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(100);
}
 
long microsecondsToInches(long microseconds)
{
// According to Parallax's datasheet for the PING))), there are
// 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
// second). This gives the distance travelled by the ping, outbound
// and return, so we divide by 2 to get the distance of the obstacle.
// See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
return microseconds / 74 / 2;
}
 
long microsecondsToCentimeters(long microseconds)
{
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}  

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HC-SR04 Ultrasonic Sensor Arduino (1)

HC-SR04

Cara Menggunakan Ultrasonic Sensor pada Arduino

Assalamualaikum wbt. semua,

Pada entri kali ini, saya akan menunjukkan bagaimana untuk menggunakan Ultrasonic sensor (HC-SR04) pada Arduino board. HC-SR04 ini pada umumnya banyak digunakan pada projek automasi dan robotik kerana ianya mudah digunakan. HC-SR04 merupakan proximity/distance sensor atau sensor jarak untuk menentukan jarak sesuatu objek. Salah satu contoh yang biasa digunakan adalah sensor undur kereta atau lebih dikenali dengan reverse sensor. 

Pada projek kali ini, saya ingin menunjukkan bagaimana untuk menunjukkan output 
HC-SR04 pada screen monitor PC anda. Hasinya adalah seperti ini:

Merah menandakan jarah objek jauh manakala
biru menunjukkan jarak objek yg dekat

Bahan yang diperlukan

1. Arduino board

2. HC-Sr04 ultrasonic sensor

3. Breadboard

4. Jumper atau wire

Software yang diperlukan

1. Arduino IDE

2. Processing arduino software. Anda boleh dapatkan di sini

Siap penyambungan

Lukisan penyambungan

Video hasil kerja saya

Coding Arduino

/*
 HC-SR04 Ping distance sensor:
 VCC to arduino 5v 
 GND to arduino GND
 Echo to Arduino pin 7 
 Trig to Arduino pin 8
 */


#define echoPin 7 // Echo Pin
#define trigPin 8 // Trigger Pin
#define LEDPin 13 // Onboard LED

int maximumRange = 200; // Maximum range needed
int minimumRange = 0; // Minimum range needed
long duration, distance; // Duration used to calculate distance

void setup() {
 Serial.begin (9600);
 pinMode(trigPin, OUTPUT);
 pinMode(echoPin, INPUT);
 pinMode(LEDPin, OUTPUT); // Use LED indicator (if required)
}

void loop() {
/* The following trigPin/echoPin cycle is used to determine the
 distance of the nearest object by bouncing soundwaves off of it. */ 
 digitalWrite(trigPin, LOW); 
 delayMicroseconds(2); 

 digitalWrite(trigPin, HIGH);
 delayMicroseconds(10); 
 
 digitalWrite(trigPin, LOW);
 duration = pulseIn(echoPin, HIGH);
 
 //Calculate the distance (in cm) based on the speed of sound.
 distance = duration/58.2;
 
 if (distance >= maximumRange || distance <= minimumRange){
 /* Send a negative number to computer and Turn LED ON 
 to indicate "out of range" */
 Serial.println("-1");
 digitalWrite(LEDPin, HIGH); 
 }
 else {
 /* Send the distance to the computer using Serial protocol, and
 turn LED OFF to indicate successful reading. */
 Serial.println(distance);
 digitalWrite(LEDPin, LOW); 
 }
 
 //Delay 50ms before next reading.
 delay(50);
} 

Coding Processing software 

import processing.serial.*;


int numOfShapes = 60; // Number of squares to display on screen 
int shapeSpeed = 2; // Speed at which the shapes move to new position
 // 2 = Fastest, Larger numbers are slower

//Global Variables 
Square[] mySquares = new Square[numOfShapes];
int shapeSize, distance;
String comPortString;
Serial myPort;

/* -----------------------Setup ---------------------------*/
void setup(){
 size(displayWidth,displayHeight); //Use entire screen size.
 smooth(); // draws all shapes with smooth edges.
 
 /* Calculate the size of the squares and initialise the Squares array */
 shapeSize = (width/numOfShapes); 
 for(int i = 0; i<numOfShapes; i++){
 mySquares[i]=new Square(int(shapeSize*i),height-40);
 }
 
 /*Open the serial port for communication with the Arduino
 Make sure the COM port is correct - I am using COM port 8 */
 myPort = new Serial(this, "COM3", 9600);
 myPort.bufferUntil('\n'); // Trigger a SerialEvent on new line
}

/* ------------------------Draw -----------------------------*/
void draw(){
 background(0); //Make the background BLACK
 delay(50); //Delay used to refresh screen
 drawSquares(); //Draw the pattern of squares
}


/* ---------------------serialEvent ---------------------------*/
void serialEvent(Serial cPort){
 comPortString = cPort.readStringUntil('\n');
 if(comPortString != null) {
 comPortString=trim(comPortString);
 
 /* Use the distance received by the Arduino to modify the y position
 of the first square (others will follow). Should match the
 code settings on the Arduino. In this case 200 is the maximum
 distance expected. The distance is then mapped to a value
 between 1 and the height of your screen */
 distance = int(map(Integer.parseInt(comPortString),1,200,1,height));
 if(distance<0){
 /*If computer receives a negative number (-1), then the
 sensor is reporting an "out of range" error. Convert all
 of these to a distance of 0. */
 distance = 0;
 }
 }
}


/* ---------------------drawSquares ---------------------------*/
void drawSquares(){
 int oldY, newY, targetY, redVal, blueVal;
 
 /* Set the Y position of the 1st square based on 
 sensor value received */
 mySquares[0].setY((height-shapeSize)-distance);
 
 /* Update the position and colour of each of the squares */
 for(int i = numOfShapes-1; i>0; i--){
 /* Use the previous square's position as a target */
 targetY=mySquares[i-1].getY();
 oldY=mySquares[i].getY();
 
 if(abs(oldY-targetY)<2){
 newY=targetY; //This helps to line them up
 }else{
 //calculate the new position of the square
 newY=oldY-((oldY-targetY)/shapeSpeed);
 }
 //Set the new position of the square
 mySquares[i].setY(newY);
 
 /*Calculate the colour of the square based on its
 position on the screen */
 blueVal = int(map(newY,0,height,0,255));
 redVal = 255-blueVal;
 fill(redVal,0,blueVal);
 
 /* Draw the square on the screen */
 rect(mySquares[i].getX(), mySquares[i].getY(),shapeSize,shapeSize);
 }
}

/* ---------------------sketchFullScreen---------------------------*/
// This puts processing into Full Screen Mode
boolean sketchFullScreen() {
 return true;
}

/* ---------------------CLASS: Square ---------------------------*/
class Square{
 int xPosition, yPosition;
 
 Square(int xPos, int yPos){
 xPosition = xPos;
 yPosition = yPos;
 }
 
 int getX(){
 return xPosition;
 }
 
 int getY(){
 return yPosition;
 }
 
 void setY(int yPos){
 yPosition = yPos;
 }
}

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