Cache o’ Phone

This is my first Geocache, also build for my skilled work 

The exam itself can be found below. You can find the skilled work in the form of a .docx as well as a .pdf file.

You also can find the code for the Microcontroller, the instructions for using the box, the interview with our major, and other files

Please note that most of the files are in German and that the cache is currently unavailable because of maintenance.