This site is being deprecated.
Please see the official X‑Plane Support page for help.
X-Plane does not assign joystick buttons by default. If this is a new joystick, you'll need to assign the buttons in the Joystick and Equipment screen, Buttons: Basic tab. Detailed instructions on how to set up buttons here.
If X-Plane did not successfully calibrate it the first time you used the joystick, you can re-calibrate it in the Joystick & Equipment screen, Axis tab. Make sure all the axes you are using are set in the drop down menu, and that the bars are green (red bars indicate that axis is not calibrated).
This site is no longer being actively maintained.