# Bittle X+Arm

{% hint style="info" %}
Bittle X+Arm is Bittle X equipped with a robotic arm.
{% endhint %}

The subpages mention the joint calibration interface for Bittle X+Arm, which uses BiBoard V0 and BiBoard V1 in the Petoi Desktop App.

## Prepare for calibration

This robotic arm is already fully assembled.

* For the **construction** kit\
  Install the short wire servo in the servo slot on the robotic arm with two M2\*5 self-tapping screws. \
  \[robotic arm installation image 0]
* For the **pre-assembled** kit

  &#x20;You only need to install the servo with the neck structure in the servo slot with two M2\*5 self-tapping screws.<br>

  <figure><img src="https://docs.petoi.com/~gitbook/image?url=https%3A%2F%2F1565080149-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252F-MQ6a951Q6Jn1Zzt5Ajr-887967055%252Fuploads%252Ft8gnaABbmIwaMjHivgYX%252FNeck.jpeg%3Falt%3Dmedia%26token%3D83a08d4b-db61-4635-ac52-8c7a69d61d06&#x26;width=768&#x26;dpr=4&#x26;quality=100&#x26;sign=4addb956&#x26;sv=2" alt=""><figcaption></figcaption></figure>

## Installation for the construction kit in the calibration state

For the construction kit, after entering the calibration state, please install the legs and robotic arm as follows:

### Install the legs

The process is the same as [Bittle / Bittle X's](https://app.gitbook.com/o/-M-_eWZUjFA4usjshHcZ/s/-MQ6a951Q6Jn1Zzt5Ajr-887967055/~/changes/650/desktop-app/joint-calibrator/bittle-bittle-x/~/overview#install-the-legs).

### Install the robotic arm

Place the robotic arm as close to the central axis as possible and insert its servo shaft into the servo arm of the neck.

\[robotic arm installation image 1]

Press down on the robotic arm so it is firmly attached to the neck.

\[robotic arm installation image 2]

## Fine-tuning

The process of fine-tuning the legs and the Servo 0  is the same as that of Bittle / Bittle Xegs process is the same as [Bittle / Bittle X's](https://app.gitbook.com/o/-M-_eWZUjFA4usjshHcZ/s/-MQ6a951Q6Jn1Zzt5Ajr-887967055/~/changes/650/desktop-app/joint-calibrator/bittle-bittle-x#fine-tuning).

Please click the blank part of the slider track and follow the calibration posture below to fine-tune Servo 1 on the robotic arm.

Please click the Auto button to fine-tune the claw (Servo 2) on the robotic arm.

<figure><img src="https://docs.petoi.com/~gitbook/image?url=https%3A%2F%2F1565080149-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252F-MQ6a951Q6Jn1Zzt5Ajr-887967055%252Fuploads%252FPawv4zrrUnu0MKkRMmDF%252FrotationDirections.jpeg%3Falt%3Dmedia%26token%3D909a19fe-2ab3-467a-86be-8fb76691731b&#x26;width=768&#x26;dpr=4&#x26;quality=100&#x26;sign=fd852987&#x26;sv=2" alt=""><figcaption></figcaption></figure>

You can also manually click the blank part of the corresponding slider track and adjust the gear on the servo output shaft to the position shown in the figure above.


---

# Agent Instructions: 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.petoi.com/desktop-app/joint-calibrator/bittle-x+arm.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.