# 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

- [鼠标加速检测器](https://www.teafun.cyou/tools/mouseaccel/) — 检测您的操作系统是否启用了鼠标加速。先慢后快地移动鼠标，我们将分析光标的非线性程度。
- [鼠标灵敏度转换器](https://www.teafun.cyou/tools/sensitivity/) — 即时转换 50+ 款游戏的鼠标灵敏度。输入您的 DPI 和灵敏度，查看 cm/360° 及各游戏对应设置。
- [手柄测试器](https://www.teafun.cyou/tools/gamepad/) — 测试手柄输入、检查摇杆漂移，并自定义死区范围。完全在浏览器中运行。
- [鍵盤熱力圖](https://www.teafun.cyou/tools/keyboard-heatmap/) — 即時追蹤最常用按鍵，用真實打字頻率生成 heatmap，仲可以匯出 PNG。
- [显示器刷新率](https://www.teafun.cyou/tools/monitor/) — 在浏览器中检测你的显示器刷新率。

## 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.