# Calibrating OptiTrack cameras with active or passive markers

## Required components

### Cameras

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-bc773f20e8f139b0c14fde8512715cc451a10ac7%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure>

<p align="center"><em>For illustrative purposes only.</em></p>

OptiTrack Primex13 or Slimx13 camera.

{% hint style="warning" %}
Please note, if you are using Slimx13 camera, you can only use Active markers.
{% endhint %}

{% hint style="warning" %}
Please note, you need a separate OptiTrack license per every camera to be able to use this feature.
{% endhint %}

### Passive markers

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-3c908e29de1536abb283e9201c69dbfe0e67345e%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure>

<p align="center"><em>For illustrative purposes only.</em></p>

Passive OptiTrack markers (only if you are using Primex13 cameras).

### Active markers

<figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-57147a4c3757afad3601c1845fa83559e4018f11%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure>

<p align="center"><em>For illustrative purposes only.</em></p>

OptiTrack Active Tags with LEDs.

### Active BaseStation

<div align="center"><figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-9c2a7bd332368f3d8a4f599cab17120dd3c1f0be%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure></div>

<p align="center"><em>For illustrative purposes only.</em></p>

OptiTrack Active BaseStation is required if you are using Active Tags.

{% hint style="warning" %}
Please contact us before making a purchase.
{% endhint %}

### Accessories

* PoE Switch

## Installation of markers

The images below show an example of active and passive marker installation into a 3D print of a mask.

<div align="left"><figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-472393fdef7537ede87ea5b217412e16b39231cd%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure></div>

<p align="center"><em>Front side.</em></p>

<div align="left"><figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-867d2b3df7a93e2a559737372a2f0a113b38bde8%2Fimage.png?alt=media" alt=""><figcaption></figcaption></figure></div>

<p align="center"><em>Back side.</em></p>

## Hardware setup process

* Sometimes the firmware needs to be updated and Active Tags re-programmed (more info soon).
* Antivirus software may interfere with Motive's communication with the Markers

## Calibration process

Coming soon...