SlimeVR Full Body Tracker

SlimeVR Full Body Tracker

is a set of sensors and software for Full Body Tracking (FBT) in virtual reality. SlimeVR makes FBT VR affordable, wireless (no base station), and more comfortable than competitors.

How it works?

SlimeVR FBT is a set of trackers and software that effectively tracks user's body in VR and other applications. Using high-quality IMU sensors connected to a PC via wifi, SlimeVR enables comfortable full-body tracking without wires, cameras, or base stations. Five trackers on your waist, thighs, and ankles track their rotation in space, then SlimeVR uses your proportions and helmet position to calculate your joints and track position using that information. In more technical terms, SlimeVR uses absolute orientation sensors and a skeleton model with user-entered aspect ratios and forward kinematics to place virtual Vive trackers at key points.

The basic set of 5 trackers allows the user to track their lower body (legs and waist), which is a physical area widely supported by VR games like VRChat. Other games like NeosVR, LIV and many more can track knees and chest using the same trackers. Additional trackers can be used to increase position tracking of the user's feet, elbows, chest, and full hands.

Focused on accessibility and comfort

The main focus of this project is user comfort. The sensors are lightweight and easy to wear, cannot be hidden, and provide a wide range of motion. Slime VR doesn't need cameras, other external sensors or base stations.

The open source design empowers the VR community to expand the SlimeVR ecosystem, create new devices, add compatibility with new software, and improve all aspects of the project in the future.

What is SlimeVR compatible with?

PC VR games with full body tracking support such as:

VRChat p>

NeosVR

Blade & Sorcery

Streaming VR games with an avatar

Steam VR Games

And more as we grow!

What about the Oculus Quest?

The Oculus Quest itself, as a standalone system, does not support full body tracking at this time. However, you can use SlimeVR with your Oculus Quest if you connect it to a PC and play SteamVR games with it!

SlimeVR VRChat Demo

Features & Specifications

Native SteamVR support

100Hz refresh rate

Completely wireless, 2.4 Ghz Wi-Fi

Over 15 hours of playtime with 1400 mAh battery

USB charging and hacking

Over-the-air firmware updates

Works with all headsets that connect to PC and provide position tracking

PC connection via Wi-Fi via card, dongle, built-in or router connection

Comparisons

SlimeVR

Long live

< p>Tundra

StonX

AprilTag

KinectToVR

Developer

SlimeVR

HTC

Tundra

StonX

Ju1ce, DIY

KinectToVR

Form factor

5 trackers 50g

3 trackers 75g

3 trackers 50g

3 trackers 30g

QR codes & central camera

Central camera

Battery life

3 p.m.

7.5 hours

7am

∞

∞

∞

base station

No (Wi-Fi)

SteamVR Flagship

SteamVR Flagship

StonX tag

Any camera

Kinect

Susceptible to occlusion

Nope

Yes

Yes

Yes

Yes

Yes

Cover

360°

360°

360°

180°

360° p>

2

360°

Accuracy

1-10cm

1

<1mm

<1mm

<1cm

<1cm

1-10cm

Latency

~15ms

~15ms

~15ms

~15ms

< p>30+ms

30-40ms

Update rate

100Hz

90-144Hz

< p>90-144Hz

120Hz

Camera frame rate

30Hz

Beach

Wi-Fi Coverage

10m

10m

3m

2-3m

2-4m

Can track any object

Nope

Yes

Yes

Yes

Yes

Nope

Open Source

SW+HW

Nope

Nope

No

SW+HW

SW

1

The accuracy of SlimeVR tracking technology depends on your setup, the plane used for measurement, and how your back bends.

2

AprilTag requires size trackers with a phone or other tracking technology (has reliable 180° coverage without).

Open Source

You can find our open source software and firmware in

our GitHub repository

. Open-source hardware schematics will be available when the campaign goes live, with a final release coming at a later date. We also plan to provide additional diagrams and instructions for an easier DIY version. Some people in our community are already making DIY SlimeVR trackers!

You can also find us on

Youtube

and follow our growing community in

Discord

!

Interested in this project?

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