# Hardware & Peripheral Testing

> Verify your mouse, keyboard, gamepad, and monitor are performing as expected with free browser tools that test hardware locally without any drivers.

## Tools in this collection

- [Mausbeschleunigung-Detektor](https://www.teafun.cyou/tools/mouseaccel/) — Finden Sie heraus, ob die Mausbeschleunigung Ihres Betriebssystems aktiv ist. Bewegen Sie die Maus langsam und dann schnell.
- [Maus-Empfindlichkeits-Konverter](https://www.teafun.cyou/tools/sensitivity/) — Konvertieren Sie Ihre Mausempfindlichkeit sofort für 50+ Spiele. Geben Sie Ihren DPI und Ihre Empfindlichkeit ein, um Ihren cm/360° und die entsprechenden Einstellungen in jedem Spiel zu sehen.
- [Gamepad-Tester](https://www.teafun.cyou/tools/gamepad/) — Teste Controller-Eingaben, erkenne Stick-Drift und passe Totbereiche an – alles lokal im Browser.
- [Tastatur-Heatmap](https://www.teafun.cyou/tools/keyboard-heatmap/) — Verfolge deine meistgenutzten Tasten in Echtzeit, erstelle eine Heatmap aus tatsächlichem Tippen und exportiere das Ergebnis als PNG.
- [Bildschirm-Bildwiederholfrequenz](https://www.teafun.cyou/tools/monitor/) — Ermittle die Bildwiederholrate deines Monitors im Browser.

## FAQ

### Do I need to install drivers or software?

No. All tools run directly in your browser using standard web APIs. No downloads, extensions, or admin rights are required.

### Can these tools replace manufacturer software?

For quick diagnostics and verification they work well. For advanced configuration like custom DPI curves or RGB lighting you still need the manufacturer app.

### My controller shows movement when I am not touching it — what does that mean?

That is stick drift: the analog stick reports input at rest, usually from wear or dust. The gamepad tester confirms it and shows how severe it is, which helps you decide between cleaning, recalibrating, or replacing the controller.

### The monitor test shows a lower rate than my display is rated for — why?

A capped refresh rate usually comes from the cable, the OS display settings, or a graphics-driver default rather than the panel itself. Check that you are using a cable rated for the refresh rate and that the rate is selected in your system display settings.