fine control of robot with mecanum wheels

[ajd]

Originally Posted by DavidGitz

Actually, if you want to increase the sensitivity at low values and decrease it at larger values, you would square root the input values, or another function with a downward concavity. If you square a value between zero and 1, it becomes even smaller.

Most likely, you would want to decrease the sensitivity, which would give you more control, since the same change of the joystick position would give you a smaller change in motor speed. So squaring it seems like a better bet for more control.