HC-05 Bluetooth Module. HC05 is basically a Bluetooth module which supports Serial Port Protocol (SPP) and is popularly used in many wireless applications. HC05 can be used to switch between master ...

The Bluetooth module wants 3.3v logic levels so that is taken into account. The image above shows a buffer chip doing the conversion, but the Fritzing schematic on the post uses a voltage divider.

For the Beacon Service sketch, we can see on the monitor window all the initialization phase, and the message "Beacon service start!" when the bluetooth module is started and ready. Two mode are ...

Once you have all the components connected correctly connect your Arduino to your computer via a USB cable. Open the Arduino code from this repository and upload it to the Arduino. Then open up the ...