Equation for converting potentiometer voltage into angle?

[Alan Anderson]

Originally Posted by DELurker

We are looking at doing something like the illustration attached. The fixed resistor is there for the zero resistance case of the pot.

If you were using a simple variable resistor, that diagram might be appropriate. But a properly-wired potentiometer always puts the maximum resistance across the power input, and the wiper provides a voltage proportional to its travel from one end to the other.

Just wire one end of the pot to +5, the other end to 0, and the wiper to the analog signal input. All three of those are conveniently provided on the analog input pins.