After using arduino leonardo for only about 3 months with no problem, suddenly yesterday I found some of my joystick buttons do not work, after further examination, I find the culprit is pin D0, all the buttons that connected to this pin do not work.
first I thought might be bad connection or broken wires, but I can not find it.
then I substitute D0 with another pin, all the buttons work again.
so there must be something broken with this pin, however, I can not find it.
I guess the quality of these arduino leonardo - chinese clone is not very good. Anybody has similar experiences?
