‍an open-source VR headset

I’m Maxim Perumal (Maxim xyz) and when my best friend Gabriel Combe and I were 15 years old we built our own VR headset because we couldn't afford to buy one. It became Relativty, one of the most popular open-source VR headset.

Make it for $200

Relativty is not a consumer product. We made Relativty in my bedroom with a soldering iron and a 3D printer and we expect you to do the same: build it yourself.


Full Steam VR support

We started Relativty because after watching Sword Art Online we wanted to make our own VR games. Thus Relativty supports SteamVR games and can be modified to add support for any DIY or off-the-shelf VR device.

Experimental positional-scaling

The room-scaling AI can be used with any camera, it tracks your body based on video input. Precision and freedom of movement are still very far from dedicated sensors, however, we believe that the model can be trained and improved by orders of magnitude.


We designed an affordable motherboard that runs the Relativty Firmware, it is based on the Atmel SAM3X8E ARM Cortex-M3 processor and uses an MPU-6050 as it’s IMU. The naked PCB and the components to solder on, cost in total about 25 dollars.

Firmware & Display

Relativty Firmware runs on any ARM sam

The Relativty firmware, which powers the actual physical device, is based on ArduinoCore-sam. So in addition to the Relativty Motherboard, it is compatible with Arduino Due or any other board equipped with a processor that supports the ArduinoCore.

120FPS at 2K or any display you want

Relativty headset runs a 2K dual-display at 120FPS. However, because of the open nature of Relativty you can use any display as long as your computer is able to handle it. From more affordable 90Hz 1080p screen to 4K panels.

Getting started

Relativty is entirely Open-source; we made it to be a testing ground for hackers and developer rather than a product. You can find the source code as well as the source for the electronics, hardware, and mechanical parts on our Github. The guide on how to build Relativty is available on our Github. You can download the latest release here.

How to build

Join our Discord server

To talk to other VR enthusiast, ask for help building the headset or provide experience to others!

We are hiring

We are starting a new company called Unai, building a new standalone VR headset from the ground-up and, alongside, the OS and Virtual World powering it. Our end goal is to solve immersiveness. This poses challenges in fields ranging from optics, computer vision, electrical design, low-level OS, game engine and many more.

We are currently hiring people willing to help solve those challenges. If you are one of those people, please reach out at

Please visit to learn more and jobs see available positions.