There are already many articles and projects and even some videos relating to the red Pretzel board. This is an Arduino Nano with integrated Wi-Fi capability. Fabian Kainka's Dev Board is also available via Elektor, produced by Franzis Verlag and has proved to be very successful. So successful, in fact that there is now a new addition to the range called Bluething with integrated Bluetooth – the board comes with a nice blue finish, as you would expect.

Whats in the box?
Bluething in Blisterverpackung
Bluething in blister pack
Just like the red pretzel board, the blue-tinted Bluetooth variant comes in a blister pack, which, as well as the board itself, contains just an A4 leaflet with a short guide in English and German. If you want more detailed information and material, just enter go to the Franzis web page in a web browser or get the files from us. When you reach the site you will be able to download the archived file ‘’. After extraction the folder contains all the necessary drivers for Windows, OS X and Linux, as well as Android. iOS is missing from the collection, but more on that later. A USB cable is not supplied with the board.
The manual consists of a single A4 sheet with links to further material.
Flip over for the English version.

Software etc.

A PDF file is included which lists the AT commands used to control the Bluetooth module. This is useful when you want to control the Bluetooth module with software you have written yourself. The latest version of the firmware is also included as a sketch for the ATmega328 in the Arduino part of the board; this allows you to easily reinstall it if you have loaded other sketches to the Arduino, which is the real point of the exercise. The third folder has a subdirectory containing Arduino sketches, , including complete examples demonstrating how the Bluething board can be switched to operate in master or slave mode. Included in the sketches is a master and slave version of a reaction tester game, here you pair two boards – by Bluetooth, of course – and then the system indicates which side has pushed its button first. Another example includes code that allows you to adjust the brightness of LEDs on the board. These examples are quite useful for your first steps with the board; they consist of proven code base with which you can experiment to gain confidence using the system.