Joysticks with circular motion

[Tom Line]

We are using our joystick to control our turret. However, like most joysticks manufactured today, the joystick has a square restrictor that forces a square motion. Short of opening the joystick and machining a restrictor to allow only circular motion, is there another joystick currently on the market that is set up this way for USB and is a reasonable price?

The square motion causes issues with aiming the turret - when you are in one of the corners you have fine control and your amplitude is larger. When you are in either the x or y axis, however, the turret is more sensitive because your distance from center is smaller and a change creates a larger actual angle change (we convert the joystick to polar coordinates).

We really don't have time to change what we have, but perhaps we can be ready for next season.