As I said, Arthur Wolf from SmoothieWare sent me a SmoothieBoard to test it in Thor.

And I just received it! It seems pretty awesome and they have included a LCD Screen in the package! Yay!
The board can control up to 5 steppers, so I'll need to add another driver in order to control one more.

Next steps will be:

1. Study the board
2. Study the firmware
3. Test the board with the standard firmware
4. Modify the firmware to adapt it to Thor
5. Add an additional driver
6. Test it all with Thor

Regards!