Controller diagnostics
Use the full controller lab for a quick overview or choose a focused test when you already know the symptom.
Diagnostic Catalog
ALL HARDWARE TOOLS
Every public GearCheck Lab diagnostic in one place. Start broad, then use focused tools to isolate controller faults, keyboard/mouse input problems, touchscreen or stylus issues, phone motion sensors, display defects, audio routing/polarity or camera/microphone behavior.
Scanning catalog…
Keyboard diagnostics
Verify individual keys, test simultaneous rollover/ghosting, or isolate a suspect switch for repeated same-key retrigger timing.
Mouse diagnostics
Check movement and clicks, compare browser-visible event rate, test held-button dropouts, investigate repeated clicks, or reproduce reverse scroll-wheel events.
Touchscreen diagnostics
Map touch-only coverage and simultaneous contacts, or run a hands-off monitor for unexpected browser-reported touch contacts.
Stylus & pen diagnostics
Inspect browser-reported active-pen pressure, tilt, twist, buttons, contact size and sampling telemetry while drawing locally.
Mobile motion sensors
Inspect browser-exposed phone/tablet orientation, acceleration including gravity, gyroscope rotation rate and sensor update cadence.
Display diagnostics
Inspect pixels and uniformity, estimate browser-visible refresh cadence, and compare ghosting/smearing/overdrive artifacts using a controlled moving target.
Audio diagnostics
Route low-level test tones, compare left/right channels, sweep and hold frequencies to find rattles, and compare in-phase versus inverted stereo polarity without installing software.
Camera & microphone diagnostics
Use the combined private media test or isolate webcam resolution/frame rate, microphone level, and live frequency-spectrum/noise-floor comparisons.
How to choose a test
Start broadIf you are not sure what is wrong, begin with the main device-category test.
Go focusedUse a dedicated diagnostic when you need deeper measurements or interpretation for one symptom.
Repeat suspicious resultsCompare another browser, port, connection mode or computer before concluding a physical fault exists.