hk kk 2.1

I'm doing my first DYI build, based on the AnyCopter, and chose (based on everyone saying it's the board to use for your first build) the HK KK 2.1.5 flight controller. I've run into two minor issues (so far): 1) The fpvcentral review of the 2.1 board says " KK now supports plugging in a...