> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/ecosystem/payloads/lr1-payload/lr1-lenses-and-expansion/expansion-ports.md).

# Expansion Ports

The two 4-pin GH connectors are expansion ports for adding thermal cameras, wide cameras, laser range finders, and other custom modules. They are both USB 2.0 connections.\
\
Connector: JST GH 3-pin

The 3-pin GH connector provides 5v and 12v power out.

{% hint style="danger" %}
Warning - do not short 12V or 5V to ground or each other. This will cause permanent damage to the LR1 Payload!
{% endhint %}

{% hint style="info" %}
Adding additional payloads will require a rebalance and autotuning tuning.

M3 holes on the camera can be used to mount small weights to balance the payload when using an external module.
{% endhint %}


---

# 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:

```
GET https://docs.freeflysystems.com/ecosystem/payloads/lr1-payload/lr1-lenses-and-expansion/expansion-ports.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.

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.