Gyroscope Test
Tilt your device to roll the circle into the target ring in the center. Keep it centered for 1.5s to pass.
How to Use This Test
Hold Your Device Flat
Start by holding your device in a comfortable position. On iOS, grant motion sensor permission when prompted by the browser.
Tilt to Move the Ball
Tilt your device gently to roll the circle toward the target ring in the center of the canvas. The ball follows your device's tilt direction.
Hold Steady in the Target
Keep the ball centered inside the target ring for 1.5 seconds. The ring turns green when the ball is correctly positioned.
Automatic Completion
Once you hold the ball in the target for the required duration, the test automatically passes and redirects, confirming your motion sensors are working.
What Your Results Mean
Test Passed Automatically
You successfully held the ball in the target for 1.5 seconds. Your gyroscope and accelerometer are functioning correctly.
Ball Doesn't Respond to Tilting
The motion sensors may be disabled, permission may not have been granted, or the device may lack gyroscope hardware.
Sensor Values Show Zeros
Alpha, beta, and gamma values remaining at zero indicate the device orientation events aren't being fired, possibly due to permission or hardware limitations.
Ball Movement Is Jittery
Minor sensor noise is normal. Excessive jitter can indicate sensor calibration issues or interference from magnetic cases or accessories.
Common Problems and Fixes
Ball stays centered and doesn't move
On iOS, ensure you granted motion sensor permission. On Android, try refreshing the page. Check that your device has an accelerometer — some budget tablets lack motion sensors.
Motion permission prompt doesn't appear
Some browsers require user interaction (like a tap) before showing permission prompts. Try tapping the canvas area first. If the prompt was previously denied, reset browser permissions for this site.
Values are very noisy or fluctuating rapidly
Place the device on a stable surface to reduce hand tremor. Some low-cost sensors have inherent noise. If values are extremely erratic, the sensor may be malfunctioning.
Test works on phone but not tablet
Not all tablets include gyroscopes — many budget tablets only have accelerometers. Check your device's specifications to confirm motion sensor availability.
Ball overshoots or lags behind tilt
Some devices have slower sensor update rates. The test uses the raw sensor values directly, so hardware limitations are reflected in the ball's movement characteristics.
Frequently Asked Questions
Why does my device ask for motion sensor permission?
On iOS devices (iPhones and iPads), Apple requires explicit permission before websites can access motion sensors. This is a privacy protection. Click 'Allow' when prompted. Android and desktop browsers typically don't require this permission.
My device doesn't have a gyroscope. Will this test work?
The test uses the DeviceOrientationEvent API, which works on most modern smartphones and tablets. If your device lacks an accelerometer or gyroscope, the test may show static values (all zeros) or may not function at all.
What do alpha, beta, and gamma values mean?
Alpha is the rotation around the Z-axis (0-360 degrees, like a compass). Beta is the rotation around the X-axis (-180 to 180, front-to-back tilt). Gamma is the rotation around the Y-axis (-90 to 90, left-to-right tilt). Together they describe your device's orientation in 3D space.
Why does the ball not move when I tilt my device?
Ensure motion sensor permission is granted (especially on iOS). The test may need a moment to calibrate. Try refreshing the page. If the sensor values remain at zero, your device may lack the necessary sensors or they may be disabled in system settings.
Can I use this test on a desktop computer?
Desktop computers typically don't have accelerometers or gyroscopes, so the sensor values will remain at zero and the ball won't move. This test is designed primarily for mobile devices with motion sensors.
How accurate is the gyroscope measurement?
The accuracy depends on your device's sensor quality. Modern smartphones typically have accurate gyroscopes suitable for navigation and gaming. The test shows raw values which may have minor noise or drift, but are accurate enough for functional verification.
Why This Test Matters
Verifying motion sensors work for gaming and AR applications
Checking gyroscope functionality before purchasing a used mobile device
Diagnosing motion sensor issues after a device drop or impact
Confirming sensor repair was successful after professional service
Testing accelerometer accuracy for fitness and navigation apps