So, you have this old Android phone and you do not know what to do with it? Its time to meet BlueAct App! BlueAct is an Action based framework for different hardware boards/kits such as Arduino ,PIC, Raspberry Pi etc ... ,and will let you to create an action using your smartphone capabilities and integrate that with your hardware via Bluetooth. These actions include :
-Voice Action: Send Voice Commands .
-Playing sound : Browse your phone sound files and play when ever you receive signal from your hardware kit.
-Vibrate : vibrate your phone.
-SMS : send SMS.
-Scheduler : send data at specific time of day repeatedly .
-Remote : a dynamic remote controller ( each button is configurable ) .
-Accelerometer : send Accelerometer sensor data to your Microcontroller .
Here is the Promo Video
And a Voice Recognition application with Arduino in action