Control LED with Bluetooth!

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

Feb 22, 2019

•

21017 views

•

3 respects

Components and supplies

9V battery (generic)

Resistor 220 ohm

Breadboard (generic)

LED (generic)

HC-06 Bluetooth Module

Arduino UNO

Apps and platforms

Arduino IDE

Cover art Smart Bluetooth - Arduino Bluetooth Serial ⚡

Project description

Code

smartbluetooth_blink

c_cpp

This is the main code for this project

1/* Made by Tomas Kopunec
2 *  2.22.2019
3 *  
4 *  By default SMART   BLUETOOTH app
5 *  sends 'a' when turning ON and 'b' when turning OFF
6 * 
7   *  If you have any questions or issues
8 *  don't hesitate and send me a message   here: devkopunec@gmail.com
9 *  
10 *  Don't forget to leave a 5-star rating   and nice feedback
11 *  
12 *  Thanks, Kopunec
13 */
14
15
16const int led   = 2;
17
18void setup() {
19  Serial.begin(9600);
20  pinMode(led, OUTPUT);
21}
22
23void   loop() {
24  char c = Serial.read();
25  if(c == 'a'){
26    digitalWrite(led,   HIGH);
27  }
28  else if(c == 'b'){
29    digitalWrite(led, LOW);
30  }
31   else{
32      
33  }
34  delay(25);
35}
36

/* 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);
}

smartbluetooth_blink

c_cpp

This is the main code for this project

1/* Made by Tomas Kopunec
2 *  2.22.2019
3 *  
4 *  By default SMART  BLUETOOTH app
5 *  sends 'a' when turning ON and 'b' when turning OFF
6 * 
7  *  If you have any questions or issues
8 *  don't hesitate and send me a message  here: devkopunec@gmail.com
9 *  
10 *  Don't forget to leave a 5-star rating  and nice feedback
11 *  
12 *  Thanks, Kopunec
13 */
14
15
16const int led  = 2;
17
18void setup() {
19  Serial.begin(9600);
20  pinMode(led, OUTPUT);
21}
22
23void  loop() {
24  char c = Serial.read();
25  if(c == 'a'){
26    digitalWrite(led,  HIGH);
27  }
28  else if(c == 'b'){
29    digitalWrite(led, LOW);
30  }
31  else{
32      
33  }
34  delay(25);
35}
36

/* 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);
}

Downloadable files

Schematic EasyEDA

This is the schematic for this project made in EasyEDA

Schematic EasyEDA