> For the complete documentation index, see [llms.txt](https://openhd.gitbook.io/open-hd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://openhd.gitbook.io/open-hd/master/ground-station-software/tower.md).

# Tower

> ⚠️ **This documentation is outdated!** A current version is available at [openhdfpv.org](https://openhdfpv.org)
>
> [📖 **View Updated Version of This Page** →](https://openhdfpv.org)

***

## Displaying the video stream via ***Tower***

Connect your device either via USB Tethering, Wifi-Hotspot or Ethernet-Hotspot to the GroundPi.

### Android

[Tower app](https://github.com/DroidPlanner/Tower/releases)

* Set `FORWARD_STREAM=rtp` in openhd-settings-1.txt to send a RTP encapsulated h264 stream to the app.
* Set video port in Tower app settings to 5000. See [here](https://github.com/DroidPlanner/Tower/wiki/Custom-video-stream) for instructions.

#### Tower App settings

For telemetry, set protocol to "UDP" and leave default server port 14550. Click on "Connect".

For video, change settings according to the following screenshots. Please note, the Tower App will not display the video stream if it doesn't receive telemetry. First make sure that telemetry works, then configure video!

![Tower\_Settings\_Android\_2\_sm.png](https://github.com/HD-Fpv/Open.HD/raw/master/wiki-content/GCS_Tower/Tower_Settings_Android_1_sm.png) ![Tower\_Settings\_Android\_2\_sm.png](https://github.com/HD-Fpv/Open.HD/raw/master/wiki-content/GCS_Tower/Tower_Settings_Android_2_sm.png)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://openhd.gitbook.io/open-hd/master/ground-station-software/tower.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.