You can then wire in your new aux cord or Bluetooth ... of volume controls and such is resumed. In final form, a Bluetooth module and Arduino Pro Micro are stuffed inside the stereo along with ...

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 ...

I cut the trace leading to the Bluetooth interface module and soldered a wire so the switch now pulls an Arduino pin to ground when pressed. A few pieces of internal plastic reinforcements for ...