Is there such thing as potentiometers that have a low resistance when centered and increasing resistances if you turn either left or right?
Edit: When i say centered, i mean that the pot is at zero resistance normally, when rotated clockwise, it will increase resistance. When rotated counter clockwise from the zero resistance position, it will also increase in resistance. Kind of like two pots put together in opposite directions.
Edit2: Well, specifically, I'm looking to modify a motor controller to give a nice smooth forward and reverse with a roll of the handle (think motorcycle throttle, except if you twist the other way, it reverses smoothly). I know the motor controller accepts a switch as forward/reverse and a pot as velocity control. Anyone ever encountered something like this?