Smol Slime
Disclaimer: This project is highly experimental. These devices may be incompatible with newer versions of SlimeVR Server and may require frequent firmware updates. Nothing is final at this stage; this includes hardware, firmware, protocols used, etc.
Smol Slimes, also known as nRF Trackers, use a protocol called Enhanced ShockBurst (ESB) on Nordic Semiconductor nRF52 and nRF54L series System-on-Chip (SoC). These are very power-efficient trackers, requiring a much smaller battery that can last for days to weeks compared to traditional ESP (WiFi) SlimeVR Trackers. A receiver, or dongle, is required to bridge communication between trackers and the SlimeVR Server. This method does not work with Quest Standalone without using a computer for OSC.
Welcome traveler. If you're new, consider exploring Smol Community Builds for examples of completed projects and suggested parts.
You can explore Smol Hardware to learn more.
Community designs will usually work with a prebuilt firmware.
- You can find pre-built firmware at Pre-Compiled Firmware.
- If you want to build the firmware yourself, see Compiling Firmware.
Once you have firmware flashed you need to setup and calibrate it, see Smol Pairing & Calibration.
Interested, have questions, or issues with this project? Chat with us in #smol-slimes on the SlimeVR Discord!