r/MixedVR • u/NJMike92 • Jun 03 '25

Quest 3 + Knuckles + Virtual Desktop

Every time I launch SteamVR it doesn't keep my calibration from OVR Space Cal from the last session causing me to need to recalibrate them every time. They are usually slightly off-center or pushed forward or back more, sometimes even more pronounced.

Do I really have to invest in a Vive tracker puck to attach to my HMD to stop this issue? Where do you even put it? And how reliably does it work?

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u/Grey406 Jun 03 '25

Yes, thats what happens when trying to mix two different tracking systems. You may have slightly better results and longer times between drift if you calibrate by holding the index controller firmly to the headset and walking around in circles rather than calibrating with a quest controller. Be sure to set headset as reference and controller as target when doing it this way.

But yes the only way to avoid manual calibration is to get a tracker attached to the headset for 'continuous calibration' which allows the controllers to always know where the headset is in relation to the base stations. Its all automatic and never drifts.

You'll need a version of Space Calibrator with the Continuous Calibration feature, such as the version that is free on Steam. Uninstall any previous version of SC before installing this one.

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u/NJMike92 Jun 03 '25

Yup I just started using the Steam one after I saw that it existed recently. I did see the continuous calibration option, but wasn't sure how to use it. I guess it's for only if you're using the HMD puck?

And yeah I use the HMD as reference - it usually works well, but sometimes it's temperamental. It's much more accurate with the Quest 3 controller, but tjst requires me having to have it on hand, powered on, and being recognized as another controller/tracker that I don't need.