BLE Heart Rate Broadcast Monitor

BLE heart rate acquisition and display app based on Web Bluetooth API, built with Vite + TypeScript + React.

Features

• Connect to BLE heart rate devices (e.g. chest straps, wearables)
• Real-time heart rate display (BPM)
• Acquisition log: samples once per second, records timestamp, heart rate, raw data
• Memory buffer up to 10000 records, UI shows last 300

Tech Stack

• Vite - Build tool
• React 19 - UI framework
• TypeScript - Type safety

Development

npm install
npm run dev

Build

npm run build

Output goes to dist/ directory.

Browser Requirements

Requires a browser with Web Bluetooth API support (e.g. Chrome, Edge), and must be accessed via HTTPS or localhost.