# Smart Ring Dashboard: direct BLE access to generic smart rings

> Smart Ring Dashboard implements direct Web Bluetooth access to Anko/Jring and Colmi/Yawell smart rings using documented BLE packet formats. Its protocol reference describes GATT services, commands and response layouts, while the browser app displays heart rate, activity, sleep and oxygen readings.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/servolok84/smart-ring-dashboard>
- Primary source: <https://github.com/servolok84/smart-ring-dashboard/blob/b1f4c4800d424c821bb8087866b69578d9b6750a/docs/protocol.md>
- Catalog page: <https://awesomerea.org/resources/smart-ring-dashboard-case/>
- Record JSON: <https://awesomerea.org/resources/smart-ring-dashboard-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/smart-ring-dashboard-case/index.md)

## Requirements & limits

- **Prerequisites:** Requires Node.js 20 or newer for local development and a Web Bluetooth browser such as Chrome or Edge for ring access.
- **Testing evidence:** The Anko/Jring family is reported tested on hardware; Colmi/Yawell support is implemented from documented protocol work.
- **Limits:** The tested Anko ring returned zero for HRV and stress fields.
- **License:** MIT licence.

## Primary sources

1. <https://github.com/servolok84/smart-ring-dashboard/blob/b1f4c4800d424c821bb8087866b69578d9b6750a/docs/protocol.md>
2. <https://github.com/servolok84/smart-ring-dashboard/blob/b1f4c4800d424c821bb8087866b69578d9b6750a/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.