Published July 12, 2018

Arduino Bluetooth Basic Tutorial

I am here to show you how to control your appliances through your smartphone

BeginnerProtip2,435

Things used in this project

Hardware components

Arduino UNO

HC-05 Bluetooth Module

LED (generic)

Breadboard (generic)

Android device

Software apps and online services

LED Controller

Arduino IDE

Story

Let’s Start Building

The circuit is so simple and small, there is only few connection to be made

Arduino Pins Bluetooth Pins

RX (Pin 0) ———-> TX

TX (Pin 1) ———-> RX

5V ———-> VCC

GND ———-> GND

Connect a LED negative to GND of arduino and positive to pin 13 with a resistance valued between 220Ω – 1KΩ. And your done with the circuit

1 / 2

How Does it Works?

HC 05/06 works on serial communication.here the android app is designed sending serial data to the Bluetooth module when certain button is pressed. The Bluetooth module at other end receive the data and send to ardunio through the TX pin of Bluetooth module(RX pin of arduino). The Code fed to arduino check the received data and compares.If received data is 1 the LED turns on turns OFF when received data is 0

How to use the App ?

Download the Application through link above given.

Pair your device with HC 05/06 Bluetooth module1. Turn ON HC 05/06 Bluetooth module2) Scan for available device3) Pair to HC 05/06 by entering default password 1234 OR 0000

Install LED application on your android device

Open the Application

Click on Paired Devices

It will show all available device then select HC 05

After connecting successfully.

Click on option to show results

Code

Code

char data = 0;            //Variable for storing received data
void setup()
{
    Serial.begin(9600);   //Sets the baud for serial data transmission                               
    pinMode(13, OUTPUT);  //Sets digital pin 13 as output pin
}
void loop()
{
   if(Serial.available() > 0)      // Send data only when you receive data:
   {
      data = Serial.read();        //Read the incoming data & store into data
      Serial.print(data);          //Print Value inside data in Serial monitor
      Serial.print("\n");        
      if(data == '1')              // Checks whether value of data is equal to 1
         digitalWrite(13, HIGH);   //If value is 1 then LED turns ON
      else if(data == '0')         //  Checks whether value of data is equal to 0
         digitalWrite(13, LOW);    //If value is 0 then LED turns OFF
   }
}

Credits

NeilChaudhary

1 project • 0 followers

Arduino Bluetooth Basic Tutorial

Things used in this project

Hardware components

Software apps and online services

Story

Let’s Start Building

How Does it Works?

How to use the App ?

Schematics

Circuit Diagram

Code

Code

Credits

NeilChaudhary

Comments

Embed the widget on your own site

Arduino Bluetooth Basic Tutorial

Arduino Bluetooth Basic Tutorial

Things used in this project

Hardware components

Software apps and online services

Story

Let’s Start Building

How Does it Works?

How to use the App ?

Schematics

Circuit Diagram

Code

Code

Credits

NeilChaudhary

Comments

Related channels and tags