The Colmi R02 Python client allows users to access data from the Colmi R02 Smart Ring, a budget-friendly fitness wearable with features like step tracking, sleep tracking, heart rate, and blood oxygen monitoring. The open-source client works offline and enables real-time heart rate and SPO2 tracking, sleep monitoring, and stress measurement. Users can interact with the ring via BLE communication protocol without requiring security keys. The client can be installed using pipx and offers CLI functionality, data syncing, and a web interface. The library documentation provides detailed information on the communication protocol and packet structure for developers.
https://tahnok.github.io/colmi_r02_client/colmi_r02_client.html