About Gamepad Tester
A gamepad tester shows the live state of a game controller as the browser sees it. Using the Gamepad API, the page lists each connected controller by name, highlights buttons while they are pressed, and prints every stick axis as a value from -1 to 1 with three decimals. Any axis more than 0.08 away from zero is flagged as off center. Vibration, gyro sensors, and touchpads are not tested.
Also known as: Stick Drift Test.
Questions about Gamepad Tester
Why is my controller not detected?
Browsers hide gamepads from web pages until you press a button, so connect the controller and press any button once. If nothing appears, check the USB cable or Bluetooth pairing and try a Chromium based browser or Firefox.
How do I check for stick drift?
Release both sticks and watch the axis values. A healthy stick rests very close to 0. If a value stays beyond about 0.08 without being touched, or wanders on its own, the stick is drifting and games may register movement.
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