Why P95?
It describes typical high-end resting behavior while resisting a single anomalous frame.
Focused diagnostic
Measure stick drift without hiding the raw signal.
CTRLCHK retains mean, median, average, RMS, peak, jitter, and P95 radial measurements. Guidance is separate and never presented as a universal hardware specification.
Device
No controller detected
Waiting
Live controller input visualization
Connect a controller over USB or Bluetooth, then press any button to begin.
Standby—
Live readout
Every axis and button, measured in real time.
Nothing untouched is treated as a failure. Values update at display refresh rate.
LX+0.00
LY+0.00
RX+0.00
RY+0.00
L radial0.0%
R radial0.0%
L2N/AUnmapped
R2N/AUnmapped
Buttons observed0 / 0
What is deadzone?
Our estimate adds a small safety margin to resting P95 and clamps the result to sensible software values.
Is input uploaded?
No. Sampling, calculations, and report creation happen locally in your browser.