In the project you can also find the Github code.
The Github repo presents an Arduino heavily commented: building the geoadata analyzer should be easy thanks to this step-by-step guide made by Ole Wolf.
Schematics and PCB layout are inside the repo in EAGLE format, by the way you can get a clue of them in the images below.
A sample Scilab and Perl script for plotting the geodata frequency analysis in a heat map is also provided in the Github repo.
What else to say? Happy coding dudes! See you at the Embedded World 2015 in Nuremberg!