I was a little bit sick last week, so that's why I couldn't work on this project. These are the final schematic sheets for the project. I will finish the PCB asap. The PCB below is just an import of the components. Thinks I have to do right now: check aliexpress for a cheap and nice DIN housing. Make it possible to fit the PCB in this housing.

I will make prototypes of the board when the PCB is ready. I will make 3 or 4 boards. I need someone that is good in configuring the board in Arduino and can rewrite some parts of the software for this board (most software is already available in Arduino libraries). If you are interested in the board and you can help me with writing the code for Arduino, please leave me a message and you will get this board (almost) for free.