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Hardware

This guide supports the following hardware options. At the minimum a single XR tracker is required to be mounted to your headset. While this guide focuses on Meta Quest headsets, the steps may also apply for other standalone headsets that are compatible with SteamVR:

XR Trackers (choose one)	Image
1x 3x Tundra Tracker (includes 1x SteamVR dongles). Highly recommended due to its small size and good battery life. (One tracker for the headset and 2x for tracking StretchSense gloves)
3x Vive Tracker 3.0 (One tracker for the headset and 2x for tracking StretchSense gloves)

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1. Assemble the GoPro to 1/4 inch photography screw adapter.

   

2. Attach the adapter above to the quick release buckle using the provided GoPro screw:

   

3. Depending on your headset, choose an Arc Base and adhesive pad. Slot the quick release buckle into this.

   1. Meta Quest Pro - Use the arc base as this has a rounded surface, positioned similar to the picture in the 3D Printed Mount for Vive Trackers part of this guide.

   2. Meta Quest 2 - Use a flat base at the flat part on the top of the headset:

      

4. Peel the yellow backing strip off the adhesive pad and attach to the base.

5. Peel the red backing strip off the other side of the adhesive pad and attach to your headset.

   

6. Test using the quick release mechanism on the buckle to remove the tracker from the headset.

7. Wait 1 hour for the adhesive to finish applying before use.

3.

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Space Calibrator Setup for Auto Calibration

These steps will explain how to setup OpenVR Space Calibrator with a single tracker as a point of reference when combining SteamVR playspaces with a standalone VR headset like a Meta Quest 2, 3 or Meta Quest Pro.

1. Download the exe from hyblocker’s fork of OpenVR Space Calibrator.

2. If prompted during download by your browser that the file isn’t commonly downloaded, select keep as the exe hasn’t been signed.

3. Ensure you have setup trackers for the left- and right-hand gloves as per the Vive Tracker or /wiki/spaces/ENG/pages/421789700 Unity guides.

4. Turn on the tracker mounted to the headset. Leave the left hand and right hand trackers off.

5. Open SteamVR and navigate to the SteamVR Settings → Startup / Shutdown → Manage Add-Ons screen.

   

6. Find the 01spacecalibrator Add-On and toggle it On.

7. Click Restart SteamVR when prompted.

   

8. After SteamVR restarts, when it launches again the OpenVR Space Calibrator window will appear.

9. In the Reference Space column, select your headset (e.g. Meta Quest Pro) and in the right column, select the tracker attached to your headset that matches the serial number from previous steps.

   

10. Click Continuous Calibration and move your head around or walk around your play space until calibration completes. Once completed you should see the tracker disappear from view as it will be positioned above your forehead in virtual space.

    

11. Check the Lock relative transform checkbox.

12. Click the Cancel Continuous Calibration button.

13. Back in the main OpenVR Space Calibrator window, turn on your left glove and right glove trackers and validate you can see the tracker positions and rotations update so they track correctly in space.

    

14. If they left and right glove trackers and Valve Base Stations are offset or drift in the virtual space while physically moving around, go back to step 7 and repeat the continuous calibration process again, making sure to uncheck Lock relative transform before you do.

15. You should not need to calibrate again, as long as the tracker is returned to the same physical mounting position on the headset in subsequent SteamVR sessions.

4. Space Calibrator Setup for Manual Calibration

Follow Knoxlabs guide if you only have two trackers available. You will be required to run the calibration periodically if the SteamVR and Meta Quest tracking spaces start to drift apart. Use the version of OpenVR Space Calibrator linked in this article for the best stability and performance.

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5. Usage

1. Start SteamVR

2. Check that OpenVR Space Calibrator has started automatically.

3. Make sure the tracker mounted to the headset is turned on.

4. Turn on trackers mounted to or near your StretchSense Studio or Pro Fidelity gloves.

5. Connect your standalone headset over Meta Quest Link, Steam Link or Virtual Desktop.

6. Validate that the glove trackers closely align within the SteamVR play space with their physical position.

7. If using the StretchSense App for SteamVR, follow the setup guide for that app.

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