In order to improve the capabilities of Valve Index, Physics-Dude has developed its own eye-tracking hardware for the headset and has hosted related resources on GitHub.
All modern VR headsets can track head movement, but our eye movements are independent of our heads, so without a way to track eye movement, it’s hard for the headset to know what we’re looking at.
In order to support Valve Index tracking the user's eyes, Physics-Dude added certain hardware to the headset, including two infrared cameras and an array of infrared light-emitting diodes. They are mounted on a 3D printed frame.
A flat ribbon cable runs from the camera to the control module on the front of the Valve Index headset. The control module contains two Seeed Studio XIAO ESP32 development boards and a custom ETVR (EyetrackVR) v4 PCB, while a 3D printed module frame allows it to be attached to the headset’s removable front panel.
After installing the hardware, users can use the EyetrackVR software. It runs on the user's PC and receives data from two ESP32 microcontrollers via Wi-Fi.
Of course, the 3D printed EyetrackVR frame can be used in other VR headsets, including Meta Quest 2 and VIVE Pro 2.
If you are interested, Physics-Dude has hosted related resources on GitHub.
原文始发于微信公众号（映维网Nweon）：Developers develop eye-tracking accessories for Valve Index and open source them on GitHub
English 
Chinese