I'm working on a round duct system project that involves a damper on the duct outlet to control flow and pressure. ANSI 210-16 requires the damper hole to be symmetrical, so we plan on using sheet metal slides that decrease/increase in area by 10% or so, similar to an iris diaphragm. I need to create a medium that allows Labview and the selected slide to communicate. That way you don't have manually enter which slide you are using every time you change the damper. One of my bosses mentioned using resistors but I have no idea what he is talking about, I am intern who has just dipped his toes.
Q) How could I implement a resistor to tell labview which slide is being used? Should I even use a resistor?