Throughout this chapter, we learned how to take advantage of one of the most important sensors on the Android phone, the gyroscope sensor, to be able to control the Arduino-controlled servo motor. We achieve this communication and action via the BLE capabilities of the Arduino equipped with the Adafruit BLE module and the possibilities of the Android operating system running 4.3 or higher.

This chapter also provides the foundation steps to the following chapter, which will access one of the Android device's most important hardwares.