# 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

- [마우스 가속 감지기](https://www.teafun.cyou/tools/mouseaccel/) — OS 마우스 가속이 활성화되어 있는지 확인하세요. 천천히, 그다음 빠르게 마우스를 움직이세요.
- [마우스 감도 변환기](https://www.teafun.cyou/tools/sensitivity/) — 50개 이상의 게임 마우스 감도를 즉시 변환. DPI와 감도를 입력하면 cm/360°와 각 게임의 해당 설정을 확인할 수 있습니다.
- [게임패드 테스터](https://www.teafun.cyou/tools/gamepad/) — 컨트롤러 입력 테스트, 스틱 드리프트 확인, 데드존 설정을 브라우저에서 바로 실행합니다.
- [키보드 히트맵](https://www.teafun.cyou/tools/keyboard-heatmap/) — 많이 누르는 키를 실시간으로 추적하고 실제 타이핑으로 히트맵을 만들고 결과를 PNG로 내보내세요.
- [모니터 재생 빈도](https://www.teafun.cyou/tools/monitor/) — 브라우저에서 모니터 주사율을 감지하세요.

## 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.