Introduction: Blu - LED's

By A.R.I.X
About: ! Error 404 !

There are so many instructables on the web , but this is the most simplest and easiest to upgrade further !!

Supplies

  • Arduino UNO | Amazon
  • Bluetooth Module | Amazon
  • LED's | Amazon
  • Arduino IDE
  • A smart phone or your laptop

Step 1: Setting Up Circuit Connections !!

  • Set up the led connection as shown in diagram !!
  • Skip to step 3 and come back again !
  • Connect Bluetooth after uploading the program !!

NOTE : Please connect the Bluetooth module as directed :

RX of Bluetooth module goes to TX of arduino board!

TX of Bluetooth module goes to RX of arduino board!

You are almost done !!

Download the app , to control your project !!

Connect to the app and bingo , you are done !!

Attachments

Step 2: Copy the Program Here !!

/* ©Compiler Bro's  */
#defineledPin8//
Intially define the state to be zero!
int state= 0;
voidsetup(){
  

  // put your setup code here, to run once:
  //Set up a communication between arduino and your system
  
  Serial.begin(9600);
  Serial.println("Connected!!");
  pinMode(ledPin,OUTPUT);
  digitalWrite(ledPin,LOW);}voidloop(){
  // put your main code here, to run repeatedly:
  
  if(Serial.available()>0)
  {

    state=Serial.read();
  }
  if(state=='A')
  {
    digitalWrite(ledPin,LOW);
    Serial.println("LED : OFF");
    state=0;
  }
  elseif(state=='B')
  {
    digitalWrite(ledPin,HIGH);
    Serial.println(" LED : ON");
    state=0;
  }}

Attachments