TUTORIAL: How to set up buttons (digital input) on the Arduino (A Control pad using INPUT PULLUP)

My website link for downloads (if any are present), etc:

A short tutorial on how to make use of tact switches/buttons on the Arduino in order to replicate a games console controller/control pad sort of functionality. We use INPUT_PULLUP.

[MikevomMars]

This is exactly how I did a simple DPad for a tiny Arduino Nano arcade handheld (minus the FTDI). Works fine, no resitor crap needed 😊

[biscottaish]

Can you explain the purpose of the FTDI?