Keyboard fallback active. WASD/Arrows for sticks, 1-4 face buttons, Q/E bumpers, Z/C triggers.
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Press C or the Calibrate button to start a 3-second sampling window. Keep both sticks centred. Reset with X.
Joy-Con thresholds: warn at 0.05, fail at 0.15. DualSense and DualShock: 0.08 / 0.22. Xbox: 0.10 / 0.25. Drift is reported when at least 80% of a rolling window of 60 to 90 readings stays past the warn threshold.
Run the 4-stage diagnostic with R, or pick a named pattern: Heartbeat, Machine Gun, Wave, Notification, Explosion.
Press L or Start to measure button response. Press button A when prompted.
C Calibrate, R Rumble, X Reset, L Latency, ? This guide, Esc Cancel/close.