Hello, here is a button box i designed.
And here (as a comment) is how i soldered the elements in a 4x4 matrix (green and yellow wires are rows, so pins A2,A1. A0 and A3 are as well; 13,12,11,10 are columns):
And here is the schematic(have done only the 4x4 matrix so far, without any ground or 5v):
Im using the Keypad and Joystick library in order to make it a game controller.
But when i checked, the on-off button and key ignition at the bottom do not work. Do they need to be wired differently? Perhaps ground wire is needed to the 'C' pin (havent done that yet), or rows need to be wired to NO not NC?
I treated them as normal momentary buttons in the keypad.
Please help and thanks in advance
Side note, i use arduino leonardo not uno.



