PhobGCC. Chances are you’ve probably never heard of it. Allow GitHub to explain what it is: The PhobGCC is a replacement motherboard for Gamecube controllers that reads stick position using magnets and Hall effect sensors instead of potentiometers that can wear out. It offers an advanced digital snapback filter that doesn’t reduce responsiveness and actually improves responsiveness in Melee. It also features gate calibration, swappable buttons, and facilitates installation of discrete switches on the D-pad and face buttons.