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Published February 22, 2019 © GPL3+

Control LED with Bluetooth!

This tutorial explains how to connect Arduino and Bluetooth module (HC-06, but HC-05 can be used too).

IntermediateFull instructions provided19,843

Things used in this project

Hardware components

Arduino UNO

HC-06 Bluetooth Module

Breadboard (generic)

LED (generic)

Resistor 220 ohm

9V battery (generic)

Optional

Software apps and online services

Arduino IDE

Cover art Smart Bluetooth - Arduino Bluetooth Serial ⚡

Story

In this tutorial I will show you how to setup bluetooth communication between Arduino and HC-06 (slave device).

We will build simple circuit based on one LED with resistor and HC-06 connected to Arduino UNO. As the app used for communication between these two devices we will use app called: Smart Bluetooth - Arduino Bluetooth Serial ⚡

Download here: https://play.google.com/store/apps/details?id=com.kopunectomas.smartbluetooth

Open the app, slide through the intro, hit SEARCH button and search for nearby devices

When your device is found, select it by clicking on it

Select prefered theme (dark or light) and hold the button you selected

Wait for the connection, if it fails, try to reconnect

After successful connection, tap on the big led in the first tab (led) and check the LED connected to your Arduino if it blinks

If everything works and you want to edit the data sent to Arduino, unlock more features and support me, purchase premium, I will be very happy :)

See the pictures below

1 / 4

If you still have problems let me know devkopunec@gmail.com, I will respond within 24h hours :)

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Code

smartbluetooth_blink

/* Made by Tomas Kopunec
 *  2.22.2019
 *  
 *  By default SMART BLUETOOTH app
 *  sends 'a' when turning ON and 'b' when turning OFF
 * 
 *  If you have any questions or issues
 *  don't hesitate and send me a message here: devkopunec@gmail.com
 *  
 *  Don't forget to leave a 5-star rating and nice feedback
 *  
 *  Thanks, Kopunec
 */


const int led = 2;

void setup() {
  Serial.begin(9600);
  pinMode(led, OUTPUT);
}

void loop() {
  char c = Serial.read();
  if(c == 'a'){
    digitalWrite(led, HIGH);
  }
  else if(c == 'b'){
    digitalWrite(led, LOW);
  }
  else{
      
  }
  delay(25);
}

Credits

devkopunec

1 project • 2 followers

Control LED with Bluetooth!

Things used in this project

Hardware components

Software apps and online services

Story

Don't forget to rate and leave a nice feedback.

Schematics

Schematics Fritzing

Schematic EasyEDA

Code

smartbluetooth_blink

Credits

devkopunec

Comments

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Control LED with Bluetooth!

Control LED with Bluetooth!

Things used in this project

Hardware components

Software apps and online services

Story

Don't forget to rate and leave a nice feedback.

Schematics

Schematics Fritzing

Schematic EasyEDA

Code

smartbluetooth_blink

Credits

devkopunec

Comments

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