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 ...

[kayakdiver] is developing a SIP and PUFF controlled kayak, but in order to start you first need a SIP and PUFF switch. These devices allow the user to lightly sip or puff into a tube to control sw… ...