# 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

- [Detector de Aceleración del Ratón](https://www.teafun.cyou/tools/mouseaccel/) — Descubre si la aceleración del ratón de tu sistema operativo está activa. Mueve el ratón lentamente y luego rápidamente.
- [Conversor de sensibilidad del ratón](https://www.teafun.cyou/tools/sensitivity/) — Convierte tu sensibilidad de ratón para 50+ juegos al instante. Introduce tu DPI y sensibilidad para ver tu cm/360° y los ajustes equivalentes en cada juego.
- [Tester de Mando](https://www.teafun.cyou/tools/gamepad/) — Prueba las entradas de tu mando, detecta la deriva del stick y configura zonas muertas personalizadas.
- [Mapa de Calor de Teclado](https://www.teafun.cyou/tools/keyboard-heatmap/) — Rastrea tus teclas más usadas en tiempo real, arma un mapa de calor a partir de tu tipeo real y exporta el resultado como PNG.
- [Frecuencia de actualización de la pantalla](https://www.teafun.cyou/tools/monitor/) — Detecta la tasa de refresco de tu monitor en el navegador.

## 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.