[Al Skierkiewicz]

Darren,
Teams do this all the time. There are a variety of applications. A simple single throw, single pole switch can be used tied to a 10 k resistor which has one end connected to a 5 volt supply. One side of the switch is tied to power common and the other side to the resistor. The switch when open allows a 5 volt input to the analog module and when closed, provides a zero volt signal. A double throw switch can be wired for three states, a multi pole switch can be wired for even more. We use an modified Radio Shack switch to provide 11 different positions for selecting different modes or auto programs in this way, either at the robot or on the driver's station. 9.1k resistors are tied between each contact and the switch then provides 12 levels of voltage between 5 volts and zero volts.