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stu81ffm

Tracker 2018 calibration

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Hi,

whats the best way to calibrate a tracker 2018? I want the z-axis value to be zero when the tracker is on the floor.

Calibrating with the HMD and SteamVR, where i put both controllers on the floor, is not accurate. Sometimes up to 5-10 cm... (btw. do both Basestations have to be on same height level?)

Calibrating only with the tracker and a Basestation is better, but I have to substract the height of the Basestation... Error is about 2-5 cm...

I am confused, do I always have to fix this manually?

Thx

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@stu81ffm - The trackers use the tracking universe and parameters that are defined by the roomsetup procedure. The tracker's can't be miscalibrated per say - it would be the entire roomsetup that would be mis-calibrated.

One thing that can cause offset is if you floor is somewhat polished/reflective which can cause the controllers to "jump" around and judder when you place them on the floor during the calibration step. You should be able to easily test this by placing the controllers on the floor as if you were doing room setup and seeing if the virtual representation of the controller is firmly anchored in the virtual SteamVR environment or if it's bouncing around. If they don't stay anchored firmly in place, it's a reflection issue from the floor.

OpenVRAdavncedSettings has a floor fix option that's super useful.

Sometimes it's the virtual environment that's miscalculated. Developers sometimes don't set their floor height correctly in their app or the offset the floor height upward so you can pick stuff up off of the ground without your controller bashing into it. Always use a blank SteamVR compositor to troubleshoot this stuff (i.e. no app running, SteamVR home disabled).

The stations do not need to be at the same height. With 2.0 stations it doesn't really matter. WIth 1.0 stations, both stations need to be .25-1.5 meters overhead of the player and pointed towards each other for the optical sync system to work.

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THX for the detailed answer, I will check the result of the calibration for the room setup.

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