SlimeVR Terminology / Glossary

SlimeVR server

The main SlimeVR application for receiving, processing, and outputting tracking data. This application runs locally using Java and connects to the SlimeVR GUI for a visual interface.

Synonyms

  • SlimeVR (contextual)
  • SlimeVR app
  • SlimeVR software
  • SlimeVR program

SlimeVR GUI

The visual interface for the SlimeVR server. This GUI runs as a webview and connects to the SlimeVR server over a websocket connection.

SteamVR driver

The SlimeVR driver for SteamVR that sends the VR headset position and rotation to the SlimeVR server, receives tracking data from the SlimeVR server, and uses the received tracking data to emulate Vive trackers in SteamVR.

Synonyms

  • SlimeVR driver

Feeder app

The feeder app is a program that connects to SteamVR and forwards tracker data from external sources to the SlimeVR server. The trackers forwarded are generally VR controllers, Vive trackers, or Tundra trackers.

It is a common misconception that the feeder app also forwards the VR headset tracking data, but that is done by the SteamVR driver.

Synonyms

  • SlimeVR feeder
  • Feeder

Session calibration

There are multiple different session calibrations within the SlimeVR Server; these are commonly referred to as "resets". These are forms of calibration that are generally not saved and need to be done during each session of SlimeVR. See the sub-terms for the types of session calibrations.

Synonyms

  • Resets
  • Software calibration
  • VR calibration

Sub-terms

Full reset

A "full reset" is a session calibration that re-orients trackers to have zero rotation in the pitch and roll axes and have the same yaw axis rotation as the head tracker (usually a VR headset), essentially "resetting" (or "zeroing") the "full" orientation. This is usually the first calibration used when starting a session with SlimeVR.

Yaw reset

A "yaw reset" is a session calibration that re-orients trackers to have the same yaw axis rotation as the head tracker (usually a VR headset). Since this only calibrates the yaw axis, the user can be in any position where the trackers are all facing in their forward orientation with the head tracker. This is a calibration mainly used to correct for drift after a subjective amount of time since the last yaw reset or full reset.

Synonyms

  • Fast reset
  • Quick reset

Mounting reset

A "mounting reset" (or "reset mounting") is a session calibration that corrects the base orientation of trackers in regards to how they are physically mounted to your body. This is usually the second calibration used when starting a session with SlimeVR if the user chooses to use automatic mounting. When mounting reset is used, the results of the calibration will override any manually set mounting orientation.

Synonyms

  • Reset mounting
  • Mounting calibration
  • Automatic mounting
  • Automatic mounting orientation

Mounting orientation

Mounting orientation is a type of correction for SlimeVR trackers. Mounting orientation corrects the base orientation of trackers in regards to how they are physically mounted to your body.

Synonyms

  • Mounting direction
  • Manual mounting

VR headset

A VR headset is a head mounted device that tracks its position and rotation, usually with a display for each eye. For more information, see https://wikipedia.org/wiki/Virtual_reality_headset.

Synonyms

  • Virtual reality headset
  • HMD
  • Head mounted device
  • Headset