VIVE Tracker Setup Guide

This guide explains how to configure head tracking using a VIVE Tracker.

Preparation

• Install the Portalgraph Runtime and SteamVR.

• To enable the use of a VIVE Tracker without a VR headset, edit the following file:

  File Path: <Steam Installation Folder>\config\steamvr.vrsettings

• In the "steamvr" section, add or modify the following line: "activateMultipleDrivers" : true, This enables multiple drivers, allowing the VIVE Tracker to work independently of a VR headset.

   "steamvr" : {
      "activateMultipleDrivers" : true, ←Edit here
      "enableHomeApp" : false,
      "haveStartedTutorialForNativeChaperoneDriver" : true,
      "installID" : "18362035634115771074",
      "lastVersionNotice" : "2.1.4",
      "lastVersionNoticeDate" : "1700250481",
      "showAdvancedSettings" : true,
      "showMirrorView" : false
   }

Edit the following file:

File Path: <Steam Installation Folder>\steamapps\common\SteamVR\drivers\null\resources\settings\default.vrsettings

In this file, locate the line: "enable" : false, Change it to: "enable" : true, This setting enables the "null" driver, allowing SteamVR to run without requiring a VR headset.

{
    "driver_null": {
        "enable": true, ←Make it true
        "loadPriority": -999,
        ・
        ・
        ・
    }
}

Portalgraph Settings

To configure an application made with Portalgraph:

1. Run the Portalgraph application and open the settings screen (typically by pressing the F12 key).

2. Check Auto-Start Tracker App and select OpenVR from the dropdown below.

This setup ensures that the SteamVR tracking software will automatically launch the next time you start the Portalgraph application, enabling head tracking through OpenVR.

In the Tracker Position dropdown, select Forehead and click Apply. This sets up the tracker to be mounted on your forehead (choose the appropriate option based on your intended mounting position).

Click Next, then click Tracker.

In the Tracker Settings screen, enter the screen size in meters. Click Calibrate, then align the tracker to the center of the screen and wait for the countdown to complete. The calibration will be performed automatically.