• EROS Trackers can be placed above the elbow with an elastic strap and adapter to capture rotation data that can be used to calculate motion data for full-body tracking in virtual reality applications.
  • EROS Pro is a 10-point motion tracking system to render the highest quality full-body tracking available for Virtual Reality. These 10 devices can be placed on the arms, chest, waist, thighs, ankles, and feet for full body immersion.
  • This image shows an EROS Tracker connected to a strap adapter on someone's arm. This tracker would enable high quality motion tracking for elbows for use in Virtual Reality.
  • You can upgrade your EROS Core Trackers by placing a tracker on each foot to provide motion data on the specific orientation of each foot. This enables high quality motion tracking for your feet in various games and experiences in Virtual Reality.
  • The EROS Tracker enables full-body tracking for Virtual Reality by communicating rotation data in a network of other trackers that can be used to calculate your movements. Each EROS Tracker measures 53mm x 53mm x 18mm.
  • This small strap includes the plastic strap adapter that serves as the anchor point for the EROS Tracker to connect magnetically.
  • EROS Trackers can pass charging from one device to the next up a stack of trackers for a simplified charging solution from a single cable.
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Somatic VR

EROS Pro

EROS Pro

$500.00 USD
$500.00 USD
Sale Sold out
Tax included.

Experience what it is like to have your entire body in VR! Eros Pro is for the full-body tracking enthusiast looking for maximum immersion.

The Eros Pro set is made up of ten trackers that work together to capture the movement and rotation of your feet, legs, waist, chest, and arms. Powered by a BNO085, Eros Trackers offer the best IMU-based consumer tracking available on the market. Each Eros Tracker can magnetically attach to the silicon strap to make it easy to jump right into VR!

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EROS Trackers are compact devices that measure rotation data in order to calculate the movement of a user for full-body motion tracking. These trackers are specifically designed to be used with the SlimeVR Server to enable full-body experiences in Virtual Reality.

How Does it Work?

Eros Trackers provide simple and effective tracking of your body in VR games and other applications. It makes full-body tracking comfortable and accessible with high-quality inertial measurement unit (IMU) sensors and a Wi-Fi connection to your PC rather than wires, cameras, or base stations. Each tracker monitors its own rotation in space, and Somatic’s software uses your proportions and headset location to calculate joint angles and estimate limb positions. The core set of five trackers is sufficient to cover lower-body movement (ankles, knees, and waist) and is widely supported by VR games and applications such as VRChat, NeosVR and LIV. You can also upgrade the core set of trackers to monitor the position and rotation of your feet, elbows, chest, and more!

Eros Core vs Eros Pro

The underlying motion tracking technology in the Core and Pro versions is exactly the same.

The Core set is for someone dipping their toe into full body tracking while the Pro set is for someone looking for the maximum immersion possible!

  • EROS Core is a 5-point motion tracking system to render the highest quality lower body tracking available for Virtual Reality. These 5 devices can be placed on the waist, thighs, and ankles for full lower body immersion.

    Eros Core

    The Core set comes with five individual trackers that attach to your waist, knee, and ankle to capture the movement of your lower body.

    Learn More 
  • EROS Pro is a 10-point motion tracking system to render the highest quality full-body tracking available for Virtual Reality. These 10 devices can be placed on the arms, chest, waist, thighs, ankles, and feet for full body immersion.

    Eros Pro

    The Pro set comes with all of the trackers from the Core set PLUS five additional trackers that attach to your elbows, feet, and chest for full body immersion.

Logos of compatible devices and softwares include Meta, Valve, VRChat, SteamVR, Blade and Sorcery, Beat Saber, Pimax, and Pico.

Cross-Platform Compatibility

Eros Trackers are broadly supported by popular VR software and hardware, including:

  • PC games and other applications, including VRChat, NeosVR, and Blade & Sorcery
  • VRChat on Quest 2 standalone with or without PC
  • Streaming VR applications with an avatar
  • VTubing
  • SteamVR games
  • Games played using the Shadow platform

What About the Meta Quest?

Support for Full-Body Tracking depends on the game and its developers. Currently, only VRChat and VRWorkout support Full-Body Tracking with Eros Trackers on Oculus Quest without the need to run the game on a PC.

Native standalone support of this is still in development, but thanks to the recent introduction of OSC Trackers in VRChat, it’s now possible to use Eros Trackers fully standalone with VRChat!

Check out the Support Page for more information on how to get this set up.

EROS Trackers are compact devices that measure rotation data in order to calculate the movement of a user for full-body motion tracking. These trackers are specifically designed to be used with the SlimeVR Server to enable full-body experiences in Virtual Reality.

Features & Specifications

  • Native SteamVR support
  • 100 Hz refresh rate
  • Completely wireless via 2.4 Ghz Wi-Fi
  • Over 15 hours of playtime with a built-in 1200 mAh battery
  • USB Type-C charging and hacking
  • Over-the-air (OTA) firmware updates
  • Works with all SteamVR-compatible headsets & Meta Quest 2
  • Does not require a PC with Wi-Fi support
  • Can connect to a Wi-Fi router on the same local network as your Ethernet-connected PC or directly to your PC if it does have Wi-Fi support
  • Vibration haptics integration for deeper full body immersion (coming soon)
Varying sizes of elastic bands to secure EROS Trackers to your limbs. The Large strap intended for chest and waist trackers is 120cm. The Medium strap intended for thigh trackers is 60cm. The Small strap intended for feet, ankle, and arm tracking is 30cm. For motion tracking of your lower limbs, you will need 1 large, 2 medium, and 2 small straps. For true full-body tracking, you will need 2 large, 2 medium, and 6 small straps.

Strap Sizing Guide

The elastic band with silicon backing allows for a secure fit on a wide range of body shapes and sizes.

Each Eros Pro set will come with:

  • 2 Foot Straps (30cm)
  • 2 Ankle Straps (30cm)
  • 2 Thigh Straps (60cm)
  • 1 Waist Strap (120cm)
  • 1 Chest Strap (120cm)
  • 2 Elbow Straps (30cm)

Additional straps can be purchased at cost at the bottom of the Products Page.

Committed to Open Source and DIY

Eros Trackers are opensource hardware designs driven by open source software developed by SlimeVR and is released under a permissive MIT License and Apache 2.0 License. As a way of contributing back to the community that has made all of this possible, we plan to release all of our hardware and software designs to empower others to continue branching and refining this core product to create the best full body tracking possible! This open design empowers the VR community to expand on the SlimeVR ecosystem, create new devices, add compatibility with new software, and improve upon all aspects of the project. For our part, we are focused on helping that community expand full body tracking infrastructure by adding support and interoperability for various devices, protocols, and features. We are part of an active DIY community, members of which build their own SlimeVR trackers, help others get into DIY electronics, contribute to our documentation, and develop hardware with different features and at different price points. All of our hardware is hacker friendly, and we encourage you to use it in new ways and adapt it to your needs!