Arduino Elevator Source code for AP computing Prototype Elevator project.
Program operates a 3 story minature elevator. It changes the polarity of two pins to contol the direction
and recieves input from touch sensors to indecate that is has reached a floor. It also controls and responds
apropriatly to a user interface which consist of interior and exterion tactile push buttons
(All are on the curcuit board). It controls LED's to indicate what floor it was on.