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QuestLHSync can align SteamVR Lighthouse devices with Steam Frame’s inside-out tracking using the headset’s cameras, without mounting a tracker on the headset. It is an unofficial software workflow—not native Lighthouse tracking—and requires SteamVR 2.0 base stations, a Windows PC running SteamVR, and a shared local network. The steps below reflect the project’s documentation, not independent hands-on testing.
What QuestLHSync does—and does not do
Steam Frame is an inside-out tracked headset, according to Valve’s Steam Frame information. QuestLHSync is a community project that bridges that tracking space with Lighthouse tracking: a headset component reports camera observations of SteamVR 2.0 base-station flashes over the local network, and a PC-side SteamVR driver calculates and applies alignment to Lighthouse devices. The project says no tracker needs to be attached to the headset. This is a software alignment layer, not an addition of native Lighthouse sensors to Steam Frame.
QuestLHSync is not affiliated with Meta or Valve. Its README is the source for the setup and behavior described here; those claims have not been independently validated.
Check compatibility before installing
- Base stations: SteamVR 2.0 stations are required; the project explicitly says 1.0 stations are unsupported.
- A Lighthouse device must be on: Have at least one compatible tracker or an Index controller powered on. The project says SteamVR otherwise may not show the base stations.
- PC and operating system: The project lists Windows with SteamVR on the PC.
- Network: Steam Frame and PC must share a local network. The README lists Steam Link, Link, Air Link, Virtual Desktop, ALVR, and CreoleCast as streaming options, but the key requirement is the shared network.
- Only one alignment utility: Turn off SpaceCalibrator, OpenVR-SpaceSync, or any other utility that moves Lighthouse devices. Running two correction tools can make their adjustments conflict.
The README does not require a particular tracker model. HTC Vive Trackers are an example of Lighthouse hardware, not a guarantee that every model or configuration works; check the tracker’s compatibility and whether it is already supported by your SteamVR setup before buying anything.
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- Full-Body Tracker: Track the physical presence of your entire body within the virtual environment. Capture full-body motions with as few as 3 trackers (Support for SteamVR BS1.0 and BS2.0).
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- Expand Your View: 240° field of view
Install and start QuestLHSync on Steam Frame
The project’s Steam Frame instructions describe a user-level installation: no root access or developer password is required. Follow the release README for the exact package and installer commands, since those are specific to the release you download.
- Prepare SteamVR and the network. Install SteamVR on the Windows PC, power on a Lighthouse tracker or Index controller, and connect the PC and headset to the same local network. If network broadcasts do not discover the PC, the project documents configuring a host address.
- Install the headset component. Download and extract the QuestLHSync release. Copy its Steam Frame package to the headset, then open a terminal on Steam Frame and run the installer included in that package. According to the README, the installer adds a user service and a small SteamVR driver on the headset, then restarts headset SteamVR once.
- Register the PC-side driver. Close SteamVR on the PC. Use SteamVR’s
vrpathreg.exetool to register the project’s PC driver, following the command and path instructions in the README for your extracted release. - Start with competing correction software disabled. Confirm other Lighthouse-moving utilities are off, then start SteamVR.
- Let the cameras observe the stations. Look around so Steam Frame’s cameras can see the base stations. The project says its software detects the headset automatically and saves an alignment for later starts.
- Check the dashboard. Use QuestLHSync’s dashboard page to reacquire alignment or pause corrections as needed. The README also describes recording a session for a bug report.
Understand what the alignment depends on
The headset camera observations connect Steam Frame’s tracking reference to the Lighthouse base-station reference; the PC-side driver then applies that relationship to Lighthouse devices. QuestLHSync’s README says initial alignment typically “locks within about half a minute,” but that is the project’s estimate, not an independent timing measurement.
Rank #2
- Includes One base station and one power adapter per order
- Fits standard threaded mounting points
- Cord: 8' 2'' L
- Compatible with Vive Pro, Vive Pro Eye, Vive Pro 2 and Vive Cosmos Elite headsets
The project also explains that observations of only two stations can leave the Lighthouse frame’s tilt ambiguous. After it observes three stations, its software levels the reference frame using headset gravity. That describes the project’s method; the available sources do not establish its accuracy or prove that it resolves every setup’s tracking problems.
Troubleshoot missing observations or alignment
- No camera frames in the dashboard: The README says camera frames are available only while the headset is tracking. Check that Steam Frame is worn and awake, and that QuestLHSync recognizes the installed build.
- Base stations are not appearing in SteamVR: Confirm that a Lighthouse tracker or Index controller is powered on, and that the stations are version 2.0 rather than unsupported 1.0 hardware.
- The PC is not discovered: Verify that headset and PC share the local network. If broadcast discovery fails, consult the README’s host-address setting.
- Corrections behave inconsistently: Check that SpaceCalibrator, OpenVR-SpaceSync, and any other Lighthouse-moving utility are disabled so only one tool is changing the alignment.
Privacy and performance limits
QuestLHSync’s README says its headset service has no local-network authentication: anyone on that network can query it. The project says it sends bright-spot positions rather than camera images, along with camera calibration and headset serial number, model, and firmware. Its own guidance is to use a trusted network.
Rank #3
- Body tracking-track the physical presence of your entire body within the virtual environment. Captures full-body motions
- Accessory tracking-enable the tracking of real-world objects to Increase the realism of your simulation or training experience
- Fits standard threaded mounting points
- Data port sharing-in addition to providing power, the USB port can be used to input Controller button events
- Steamvr tracking-provides sub-millimeter accuracy for the best experience possible
The reviewed project documentation and discussion provide no independent measurements of tracking accuracy, drift, latency, or long-term reliability. A Steam Community discussion about native Steam Frame compatibility predates this QuestLHSync workflow and is user-generated, so it should not be treated as evidence that the documented software alignment is native support.
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- Includes secure and comfortable anti-slip straps in various sizes to keep trackers firmly in place during active use.
- Wide compatibility with popular VR systems including SteamVR, Meta Quest, , and Valve Index for versatile usage.
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