Resist the urge to solder the Bluetooth board in–since it talks on the same port as the Arduino uses for programming, you’ll have to remove it before uploading new code. If you need help ...

This is a simple project. It uses an Android device to switch an LED driven by the Arduino. Connectivity is provided by the Bluetooth module inserted in the breadboard. But one look at the UI on ...

Here I provide an example library to do that. One efficient way to communicate between Arduino ... the PIN code, the default PIN is 8888, feel free the change it later at line 70 of bluetooth ...