Be aware the atmega328 has the ability to set its other pins as interrupts, called the "PCINT" interrupt system I think... I've read somewhere that somebody wrote a library to use these, but I don't have the link off hand.
Be aware the atmega328 has the ability to set its other pins as interrupts, called the "PCINT" interrupt system I think... I've read somewhere that somebody wrote a library to use these, but I don't have the link off hand.