Valve Index Quick n Easy $8 Ancillary Eye Tracking

(If you find any of my models for sale online (ebay, amazon, etc) it is not me, i do not sell prints; especially not at those insane prices. They are all listed as non-commercial works. I do not have a patreon or kofi or any donation platform. These models are only listed here on printables, for free, for you to print or use a print service like PCBway or JLCPCB, or your friends.)

Yes you heard that right, 8$ eye tracking with no soldering using off the shelf parts. 

• This eye tracking requires zero diy skills to make. 

• No soldering

• No tiny components

• No firmware flashing

• Simply plug n play

It is confirmed to work well while wearing glasses. (view with glasses below)

There is sufficient clearance to hit the full 70mm max ipd setting. 

With any project related to your eyes, you assume all risks and responsibility to understand and research exposure and intensity limits. 

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The module:

• Purchase 1 (or 2 if you want both eyes) HBVCAM 1914s IR 160deg or 130deg camera. 

  

  

  This comes with everything you need including a usb cable and built in illuminators

  • NOTE:  THE ILLUMINATORS ARE VERY BRIGHT AND HAVE HOTSPOTS, YOU NEED TO REDUCE THEIR BRIGHTNESS AND REDUCE THE HOTSPOTS. FOR EXAMPLE, COVER THEM WITH DIFFUSION AND TINTING TAPE UNTIL SAFE EXPOSURE AND INTENSITY LEVELS ARE REACHED.

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Printing:

• DO NOT PRINT IN PLA; USE PETG

  • The camera module gets hot, pla will soften, you need to use PETG/ABS/Nylon/etc

• Print 3 perimeters 40% infill with build plate tree supports

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Assembly:

• Cover the illuminators with diffusion tape.

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• Slide the module into the the mount

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• Feed the usb cable through the vent port in the top of your facial interface

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• Plug the usb into the frunk

  • (use a hub if you want both eyes)

• Plug the usb connector into the led module

• Press the module onto the lens

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Software:

• Download babblonia from steam or github 

  • https://github.com/Project-Babble/Baballonia

  • https://store.steampowered.com/app/4091970/Project_Babble_Baballonia/

  • Enable expressions beta if your using steam

    

• Select your camera 

  • It should show up as USB Camera or similar

    

• Crop the view like this:

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• Enable VRCFT module for eyes if your using VRCFT, else enable native VRC eye tracking if not. 

  • Note, if your avatar eyetracking template does not have "eye sync" and your only using one eyetracker, you should use VRCFT (on steam) as it has settings to enable this. 

    

  • Resonite should work directly. 

    • You may need to use the launch argument -ForceBabble

• Put on your headset, get in vr, click eye calibration and follow instructions

  

• In VRC ensure OSC and ET is enabled on your avatar. 

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Check out my hbvcam face tracker if you need one of those aswell:

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Changelog:

• 8.21.2026 - First Release

• 9.13.26 - Added a new version with different camera positioning and simplified printing. 

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