HRV Monitor

Active Rust

Concept

Rust TUI application for real-time heart rate variability monitoring. Connects to BLE heart rate sensors via btleplug, computes time-domain HRV metrics (RMSSD, SDNN, pNN50) using cardio-rs, and stores session data in Apache Arrow/Parquet format for longitudinal analysis.

Architecture

BLE: btleplug for cross-platform Bluetooth Low Energy communication
HRV analysis: cardio-rs for time-domain metric computation
Storage: Apache Arrow + Parquet for columnar session files
TUI: ratatui + crossterm for terminal interface
Platform: macOS (Linux/Raspberry Pi planned)