Guides · Methodology & fixes
The deep dives behind the tools.
Every tool on this site tells you a number. These guides explain where the numbers come from, what causes the faults they reveal, and which fixes hold up — written to be checked against your own measurements, not just read.
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Game input
Stick Drift: Causes, Measurement, and Real FixesWhat drift is at the sensor level, how to quantify it, and which fixes last.
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Input
Key Rollover and Ghosting, ExplainedWhy some key combos won't register, what NKRO really means, and how to test yours.
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Input
Keyboard Chatter: Fix a Key That Types TwiceWhy a switch fires twice, the cleaning that works, and when replacement is the answer.
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Audio in
Microphone Too Quiet? Fix Low Mic VolumeA systematic path through distance, gain, OS settings, and browser processing.
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Audio in
What dBFS Means on a Mic Level MeterReading digital levels: why 0 is the ceiling, where speech should sit, and what clipping is.
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Video in
Why Webcams Look Grainy — and What HelpsLight, exposure, and compression: what actually changes image quality, and what doesn't.
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Display
Dead Pixel Warranty Rules: ISO 9241-307, ExplainedThe pixel-fault classes, what "within spec" means, and how to document a claim.
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Measurement
The Bank Card Is a Precision InstrumentID-1 dimensions, why every card is exactly 85.60 mm, and other everyday reference objects.
How these guides are written
Each guide is anchored to a measurement you can run yourself with the matching tool, in your browser, with nothing uploaded. Claims are stated so you can check them — resting thresholds, standard dimensions, level targets — and where the honest answer is "it varies" or "that fix is temporary," the guide says so instead of promising magic.