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About Bluetooth Switch - Arduino

bluetooth switch with up to 26 buttons

Bluetooth Switch is an app that you can use to connect to your Arduino and turn the device on and off.

The app lets you control your device from your phone or tablet so you can turn it on and off without getting out of bed.

For example, you can use this app to turn lights, electrical appliances or other devices on or off.

To use the Bluetooth Switch, you must first connect the Bluetooth module to the Arduino.

After connecting the bluetooth module, you need to open the app and pair it with the Arduino.

Once the pairing is complete, you can use the app to power on and off your device.

Bluetooth Switch is a useful application for anyone using Arduino.

This application allows you to control your device from your phone or tablet, which is very convenient and efficient.

Download Bluetooth Switch now and experience a new way to control your Arduino!

[function]:

- Can be used in connection with HC-05 and HC-06.

- You can select up to 26 buttons.

- All on the switch

- All switch off

- Send a specific character to the Arduino whenever the switch is on or off.

- You can change the toggle icon.

- You can change the name of the switch.

- If you set automatic connection, it will automatically connect to previously connected devices.

[Arduino Source Code Example]

#include

void allOn(){

digitalWrite(2, HIGH);

digitalWrite(3, HIGH);

digitalWrite(4, HIGH);

digitalWrite(5, HIGH);

digitalWrite(6, HIGH);

digitalWrite(7, HIGH);

digitalWrite(8, HIGH);

digitalWrite(9, HIGH);

}

void allOff(){

digitalWrite(2, LOW);

digitalWrite(3, LOW);

digitalWrite(4, LOW);

digitalWrite(5, LOW);

digitalWrite(6, LOW);

digitalWrite(7, LOW);

digitalWrite(8, LOW);

digitalWrite(9, LOW);

}

void setup() {

pinMode(2, OUTPUT);

pinMode(3, OUTPUT);

pinMode(4, OUTPUT);

pinMode(5, OUTPUT);

pinMode(6, OUTPUT);

pinMode(7, OUTPUT);

pinMode(8, OUTPUT);

pinMode(9, OUTPUT);

Serial.begin(9600);

allOff();

}

void loop() {

if(Serial.available()){

char rx_data=Serial.read();

// out On

switch(rx_data){

case '1':

allOn();

break;

case 'A':

digitalWrite(2, HIGH);

break;

case 'B':

digitalWrite(3, HIGH);

break;

case 'C':

digitalWrite(4, HIGH);

break;

case 'D':

digitalWrite(5, HIGH);

break;

case 'E':

digitalWrite(6, HIGH);

break;

case 'F':

digitalWrite(7, HIGH);

break;

case 'G':

digitalWrite(8, HIGH);

break;

case 'H':

digitalWrite(9, HIGH);

default:

break;

}

// out Off

switch(rx_data){

case '0':

allOff();

break;

case 'a':

digitalWrite(2, LOW);

break;

case 'b':

digitalWrite(3, LOW);

break;

case 'c':

digitalWrite(4, LOW);

break;

case 'd':

digitalWrite(5, LOW);

break;

case 'e':

digitalWrite(6, LOW);

break;

case 'f':

digitalWrite(7, LOW);

break;

case 'g':

digitalWrite(8, LOW);

break;

case 'h':

digitalWrite(9, LOW);

default:

break;

}

}

}

What's New in the Latest Version 1.5

Last updated on Dec 7, 2025

Minor bug fixes and improvements. Install or update to the newest version to check it out!

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Additional APP Information

Latest Version

Request Bluetooth Switch - Arduino Update 1.5

Uploaded by

Marcel Doank

Requires Android

Android 7.0+

Available on

Get Bluetooth Switch - Arduino on Google Play

Show More

Bluetooth Switch - Arduino Screenshots

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