How to control Arduino board using an Android phone
Kerimil, user on Arduino Forum, submitted us his project which focuses on establishing communication between an Arduino board and an android mobile using bluetooth:
The idea is to gain access to hardware on Android devices (accelerometers, gyro, wifi connectivity, gps, GPRS, touchscreen, text to speech and speech to text) and/or use it to relay data to the internet. MIT’s app inventor was used to write a custom app in this example. The code can be easily modified to create your own apps.
You can watch his video below and read the complete tutorial on this page.