smart-ring

A privacy-first, subscription-free health tracker for affordable wearables.

Reverse engineering smart ring protocols

An open-source smart interactive ring based on ESP32-C3 featuring trackball input, air mouse, IMU gesture recognition, BLE HID, low-power sleep, and BLE OTA updates, designed as an ultimate wearable controller for AR/VR/MR glasses, tablets, PCs, and beyond.

Read information via Python from Colmi Smart Ring

Wozai — a relationship-centered life-record and entrustment project for the Hong Kong Physical AI Hackathon, combining grounded AI, Alloop HRV, wearable inputs, and human feedback.

Ecosystem for open source smart wearables, with a focus on modularity, transportability, and UX

A thumb-worn multimodal smart ring, callled "mRing", is designed to support mid-air interactions with Computers/TV/Phone/AI/Robots, leveraging micro touch gestures between thumb and other 4 fingers

Ultrahuman — independent third-party profile of a public API surface, by API Evangelist. Ultrahuman makes the Ring AIR and Ring Pro smart rings and the M1 continuous glucose monitor (CGM), a subscription-free metabolic-health wearable ecosystem. Its Partner (UltraSignal) API lets approved partners read user-consented health metrics - sleep, HRV, re

Offline Android client for the RingConn Gen 3 smart ring: syncs health data over BLE into Health Connect and buzzes the ring on notifications — no cloud, no account, no root.

Home Assistant integration and Fitorb Mobile Relay for Fitorb/Colmi-compatible smart rings.

Reverse-engineering the Colmi R02 smart ring: byte-patched firmware, a measured 352Hz accelerometer ceiling, and a ring-based typing decoder.

原生 macOS (SwiftUI) 第三方客户端，连接 Moyoung Da Rings 智能戒指 — 非官方、净室逆向实现

Open COLMI R12 firmware patch for Zwift heart-rate monitoring over BLE

The open platform for smart rings.

Your own app for cheap generic smart rings (Anko / Kmart AU, Colmi, Yawell) — sleep, heart rate, steps, SpO2 and HRV over Web Bluetooth. No vendor account, no subscription, local-first.

Local-first, open-source Flutter companion for COLMI R12 smart rings. Sleep, activity, pulse and SpO₂ history, clear signal explanations, and your data on your phone.

Oura Ring — independent third-party profile of a public API surface, by API Evangelist. Oura Ring is a smart ring health tracking platform that provides a REST API for accessing sleep, activity, readiness, heart rate, daily health scores, and 50+ biometric metrics via OAuth2.

Local BLE bridge from the SR16 smart ring to a private SQLite store. Vendor 0x15 HR-log history sync → local Ollama analysis → Telegram.

🌅 A custom-built Oura: sleep, recovery & activity scores from a COLMI R09 smart ring. Fully offline, no cloud, no subscription. Kotlin + Jetpack Compose.