State machines are also excellent whenever you need to do several tasks at once. I.e. state machines never block code execution, and all the state info the machine needs is inside the machine.

State machines in Arduino. I was looking for ways to do finite state machines in Arduino code. Forgive me here C and C++ programmers, for I do not dwell within your hallowed halls. This one, from ...

With Arduino C, small if/then state-machines generally come out smaller a switch/case version. Which ever is chosen, the result is pretty efficient, and the switch/case penalty is rarely greater than ...