Usar o APKPure APP
Obter o APK da versão antiga de Arduino Controller Bluetooth para Android
Use este aplicativo como um controlador remoto Bluetooth para Arduino
If you want to control arduino via bluetooth for your project.
Let your android device be a remote control for any micro-controller with a bluetooth module.
Run the app, search for your bluetooth module and connect. Once you are connected you will be able to send your own commands to your arduino board using the keyboard or some fancy buttons. Send command with your voice.