I emailed the designer of the board to enquire about support for spindle encoder input for thread cutting on a cnc lathe. Unfortunately this board does not support encoder input.

Despite this, it is probably still an excellent deal for a milling machine or a router if it does what it says on the tin. €150 or even less (after adding in the price of a beagle bone black) for a complete plug and play motion controller including software seems pretty good to me.