For my first project I used an IPAC but I'd like to replace it with something cheaper since the control panel is only 1 player with a total of 5 buttons (p1 start , p2 start , coin, p1b1, p1b2)
I've torn apart the keyboard, mapped the matrix, and soldered an IDE cable to it. I assume I won't have to worry about ghosting since it's such a simple cp.
I'm wondering how to actually wire it up to the buttons. For example, how do I connect up the player one start button which is the key 1.
Do I connect the two wires that make up the key 1! to NO on the push button? But what about a ground? Or do I connect one of the wires to the NO and the other to the common contact?