Wearable Sensing’s DSI-24 Compatibility with Varjo’s XR-3

This tutorial will demonstrate how to adapt the Varjo XR-3 to the DSI-24. The DSI-24 is Wearable Sensing’s dry electrode EEG system. While the XR-3 is Varjo’s most immersive VR experience with photorealistic visual fidelity.

1. First off you will need to 3D print the following model to attach to the XR-3 allow for compatibility. The model can be found here: STL File

After you have printed the adapter you will need to remove Varjo’s deafult headpiece.

  1. Remove the cushion from the headpiece, you will then see 4 screw holes.

  1. Unscrew the 4 screws that connect the “headstrap” to the XR-3.

  1. Carefully unhook the “headstrap” from the XR-3. There are three hooks on each side of the XR-3.

After removing the headstrap from the XR-3 we will need to attach the 3D printed adapter to the XR-3.

  1. Carefully hook the 3D printed adatper to the XR-3. Be careful as the hooks are fragile as they are a small weakly supported piece. It is recommended that you do not screw in the screws before hooking everything in first.

  1. Once the adapter is hooked in, screw in the screws to secure the adapter to the XR-3.

  1. Apply Velcro’s Sleek and Thin to the 3D printed part so that you can attach the cushion back on.

  2. Attach the cushion back on to the XR-3.

  3. Use the front provided straps from DSI-24 to attach the DSI-24 to the adapter. The strap provided by Wearable Sensing for the Meta Quest will also work.

  4. You will also need to have additional straps to secure the DSI-24 on the sides.

Now that you have a working DSI-24 with the XR-3 you can now use PhysioLabXR to integrate the two hardware devices in software.

Need a program to integrate the two devices? Check out these two links to get started!