It’s hard to imagine an easier way to set up communications between an Android device and an Arduino using Bluetooth ... cheap and ubiquitous HC-05 Bluetooth module. Having picked up one of ...

A FT-232 USB to serial board is used to program the Arduino. A standard Bluetooth module has to have HID firmware installed. [Dastardly] makes a homemade daughterboard–er, shield–to connect ...

Then, an Arduino board might be ... protocols like Wi-Fi and Bluetooth, though. However, additional components -- a Wi-Fi shield and a Bluetooth module -- are required. The R4 WiFi is already ...