This web page (and the project) is still under construction. However the expansion board design is tested and can be downloaded in the download area.

The board I is tested and works on few applications since about 1 year. the board III is in development, but the basic functionality is tested already.

I'm just doing this for hobby, but I think of selling construction kids of the board III, which can be used not only as expansion board for Raspberry Pi, but also as standalone microcontroller board with PIC18F25K50. Of cause a PICKIT3 Programmer would be needed to write software for the board.