Two way Bluetooth between Arduino and Android
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This instructable describes an Android application named Andruino that can be used to control an Arduino board from an Android phone. It’s both an Android app and an Arduino program, and provides a simple user interface to control Arduino’s digital and PWM, send text commands to Arduino, and receive data from Arduino over Bluetooth serial using the popular and inexpensive HC-05 Bluetooth serial module.
Two way communication between Android and Arduino
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