A free app for Android, by Apps valley.
The Arduino Bluetooth Controller - All in One is a handy tool for controlling the built-in Bluetooth module of your device through the Android operating system. It allows you to send commands to your Arduino board using a compatible Bluetooth keyboard or a set of buttons.
You can send commands to your device to change its state, perform a specific function, or perform a series of commands.
How to install and use it
The installation of the app is very simple and easy. You just need to download it from the Google Play Store and install it. After you have installed it, you need to find the app and open it. The app will start looking for a Bluetooth device. When it finds one, it will start connecting and will then start working. After that, you will be able to control your device.
