# Page Not Found

The URL `biboard/demo-applications/13.use-of-wifi-and-ota` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [15.The usage of Wi-Fi OTA(Over-The-Air)](https://docs.petoi.com/biboard/demo-applications/15.the-usage-of-wifi-ota.md)
- [3.Analog-digital converter](https://docs.petoi.com/biboard/demo-applications/3.analog-digital-converter.md)
- [2.Serial port](https://docs.petoi.com/biboard/demo-applications/2.serial-port.md)
- [1.GPIO port](https://docs.petoi.com/biboard/demo-applications/1.gpio-port.md)
- [6.Gyro IMU（MPU6050）](https://docs.petoi.com/biboard/demo-applications/6.gyro-imu-mpu6050.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://docs.petoi.com/biboard/demo-applications/15.the-usage-of-wifi-ota.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://docs.petoi.com/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://docs.petoi.com/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/biboard/demo-applications/15.the-usage-of-wifi-ota.md`).

You may also use `Accept: text/markdown` header for content negotiation.