Published April 28, 2022

Arduino Uno HC-05 Bluetooth Controlled LED using Mobile

This project is going to tell you How to make a HC-05 Bluetooth Controlled LED using LED with help of Mobile. A smart Home Project

BeginnerFull instructions provided15,129

Arduino Uno HC-05 Bluetooth Controlled LED using Mobile

Things used in this project

Hardware components

Arduino UNO

HC-05 Bluetooth Module

5 mm LED: Red

LED, Blue

5 mm LED: Green

Breadboard (generic)

Jumper wires (generic)

Software apps and online services

Arduino IDE

Bluetooth Electronics

Story

Connect me on

Below is a video that goes through all the steps to assembling and running the traffic lights using the Arduino Look the Demonstration video HERE

Youtube

Hackster

Arduino

Instagram

Introduction

In this project I am going to demonstrate how to control 3 Led using your smart phone with the help of Bluetooth connectivity.

This project will involve using a little a bit of code and a very simple circuit that’s great for beginners.

The video further down this page will go through all the steps to completing this very cool DIY LED Controlled project.

This project aims to control the blinking of a LED using wireless technology. This will serve as a base to build more amazing projects on home automation and many more automation projects.

Working on Basics

The LED have been powered by Arduino UNO (Board). It contains a code which uploaded to the board. And once it simulated you can connect with Bluetooth Module (HC-05) with you compatible device

Once code have been uploaded and Connected the Bluetooth and start pressing button through app known as Bluetooth Electronics and start pressing button you will be able to see that the desire led which is code for button pressed will be turned on.

Refer to this video there is full instruction how to create button in app and how to use app.

CLICK HERE

Usage

There is multiple use of this project:-

You can come to know how to use Bluetooth with Arduino

It is a very helpful project who are getting starting in home automation.

If you are a beginner and want to control Arduino with Smartphone so you can do with the help of this.

You can change code and components according to you and can code it easily and control it through smartphone easily.

Prototype Image's

1 / 5

Hookup

Connection of HC-05

Hook the GND pin (Negative Pin) of HC-05 to Pin GND of Arduino.

Connect Red VCC Pin (Positive Pin) of HC-05 to VCC of Arduino.

Connect TXpin (DataTransferPin) of HC-05 to RX pin of Arduino.

Connect RXPin ofHC-05 to TXPin of Arduino.

Connection of LED

Hook the GND Pin(NegativePin) of all led to Pin GND of Arduino.

Connect VCC Pin (Positive Pin) of Red LED to Pin 3 of Arduino.

Connect VCC Pin (Positive Pin) of Blue LED to Pin 4 of Arduino.

Connect VCC Pin (Positive Pin) of Green LED to Pin 5 of Arduino.

Uploading and Testing

Copy or download the code attached with the project.

Download the app known as Bluetooth Electronics available on Play Store. CLICK HERE to download.

Build up Button to control LED using the app. To Watch video how to Build up button CLICK HERE.

Once complete setup you will able to control (on/off) LED using your Device

Watch the Demonstration Video

CLICK HERE

Circuit Diagram

Connection of HC-05

Hook the GND pin (Negative Pin) of HC-05 to Pin GND of Arduino.
Connect Red VCC Pin (Positive Pin) of HC-05 to VCC of Arduino.
Connect TX pin (Data Transfer Pin) of HC-05 to RX pin of Arduino.
Connect RX Pin of HC-05 to TX Pin of Arduino.
Connection of LED

Hook the GND Pin (Negative Pin) of all led to Pin GND of Arduino.
Connect VCC Pin (Positive Pin) of Red LED to Pin 3 of Arduino.
Connect VCC Pin (Positive Pin) of Blue LED to Pin 4 of Arduino.
Connect VCC Pin (Positive Pin) of Green LED to Pin 5 of Arduino.

Code

Code

 void setup() {
Serial.begin(9600);
 pinMode(3, OUTPUT); // put your setup code here, to run once:
 pinMode(4, OUTPUT);
 pinMode(5, OUTPUT);
 }

void loop() {
  // put your main code here, to run repeatedly:
 if(Serial.available()>0)
   {     
      char data= Serial.read(); // reading the data received from the bluetooth module
      switch(data)
      {
        case '1': digitalWrite(3, HIGH);break; 
        case '2': digitalWrite(4, HIGH);break;         
        case '3': digitalWrite(5, HIGH);break;

        case '4': digitalWrite(3, LOW);break; 
        case '5': digitalWrite(4, LOW);break;         
        case '6': digitalWrite(5, LOW);break;
        
        default : break;
      }
      Serial.println(data);
   }
   delay(50);
}

Credits

DIY Inventor

0 projects • 17 followers

Hello Guys, My name is Krishna Agarwal , and I'm passionate about Making DIY Projects. Here I make Arduino and Robotics related projects.

Arduino Uno HC-05 Bluetooth Controlled LED using Mobile

Things used in this project

Hardware components

Software apps and online services

Story

Connect me on

Introduction

Working on Basics

Usage

Prototype Image's

Hookup

Uploading and Testing

Watch the Demonstration Video

Schematics

Circuit Diagram

Code

Code

Credits

DIY Inventor

Comments

Embed the widget on your own site

Arduino Uno HC-05 Bluetooth Controlled LED using Mobile

Arduino Uno HC-05 Bluetooth Controlled LED using Mobile

Things used in this project

Hardware components

Software apps and online services

Story

Connect me on

Introduction

Working on Basics

Usage

Prototype Image's

Hookup

Uploading and Testing

Watch the Demonstration Video

Schematics

Circuit Diagram

Code

Code

Credits

DIY Inventor

Comments

Related channels and tags