![]() ![]() In my code it only types a letter when the button is pushed, not when released but you could change this. A 1-1/8 Forstner bit is best for arcade controls. Also 28.575mm for the other 95 of the world. But if the button state changes, as in you press or release a button something happens. I just tore my garage apart looking for my 1 1/8 hole saw, which I last used building my arcade cabinet. With this method you look at the state of the button, is it up or down? Then you compare it to the previous state, was it already up or down? If the previous button state is the same as the current button state nothing happens. If you want a single instance of something to happen if a key is pressed, like a jump or an on/off switch then you would choose the single push method. ![]() It really depends on your project what you would want. You basically have two choices, single buttons presses and a continuous stream of letters if pushed. ![]() Now the question is how you want your buttons to work. I used the Arduino standard example "Keyboard message" as the base for my code. You have to include the Keyboard library. The programming, thanks to the Leonardo, is pretty simple. Wire up the buttons in the standard way, I believe I used 10K ohm resistors. So, before I bought the arcade buttons that I wanted to use I tested this out with standard push buttons. ![]()
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