Diagnostic 01
Stick Drift Test
Leave the selected stick untouched while the test samples its resting position. We look for repeated displacement, noise and directional bias—not a single bad frame.
Waiting for controller
Live center plot
Connect a controller, then choose a stick and start.
Result
No test yet.
Median offset—
Maximum offset—
Jitter—
Samples0
Mean X—
Mean Y—
Directional bias—
These are browser-observed values. The labels are product heuristics, not a universal manufacturer pass/fail specification.