Blog
Tests
Guides for testing your keyboard, mouse, screen, sound, network and other hardware, and for fixing what the tests find.
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Tests
Caps Lock works but letters still appear lowercase
Find out why Caps Lock lights up but typing stays lowercase, test whether the key registers, and check Shift, keyboard settings, and the app.
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Tests
What a browser keyboard test cannot measure about force
A browser keyboard test can show whether keys register, but it cannot measure how hard you press. Learn what its results mean and what to check next.
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Tests
How to inspect a used POS keyboard
Check every key, modifier, cable, and programmable button on a used point-of-sale keyboard before relying on it at a busy checkout.
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Tests
Mouse selects text when I only click: how to fix it
Find out why a single mouse click highlights text, test whether a button is sticking, and fix click-lock, double-click, or connection problems.
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Tests
How to check if your mouse's right button releases early
Check whether your mouse's right button sends a release while you are still holding it, then narrow down the cause and choose the next fix.
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Tests
How to test a microphone for online language lessons
Check whether your microphone captures clear speech before a lesson, then fix low volume, the wrong input, or browser permission problems.
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Tests
When to disable audio enhancements for accurate testing
Learn when to turn off noise suppression, echo cancellation, and auto volume, then compare your microphone's less-processed signal with call-ready audio.
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Tests
Why headphone audio sounds hollow with spatial sound on
Find out whether spatial audio, an app effect, or a headphone setting is making sound hollow, then compare channels and switch off the right effect.
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Tests
How to check for a weak tweeter with a test tone
Use a browser speaker test and a low-volume tone sweep to compare treble output, spot a weak tweeter, and separate speaker faults from settings.
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Tests
How to detect a failing Enter key on a laptop
Test whether your laptop's Enter key is missing presses, repeating, or sticking, then narrow the cause to settings, software, or hardware.
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Tests
How to check sensor behavior on a school tablet
Test a school tablet's motion, compass, light, location, and vibration sensors in a browser, and find out what permissions or school settings can block them.
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Tests
How to prepare motion sensors for a museum demo
Prepare a reliable browser-based motion sensor demo by checking permissions, device orientation, and movement before visitors arrive.