"mmjoy2" by default no axis and no buttons, no any fixed presets. just setup as you like as you need. 1) open "Pins_Sparkfun[promicro].PNG" and you see a pins names(F4/D3/B6) and possible pins fuctions(AI/AE/BM). 2) think what you want, make decision, set X pins to axis, Y pins to button raw and Z pins to button column. 3) solder / setup and enjoy.