This tutorial walks you through a tiny, privacy-first web app that reads only the advertised CO2 level from a nearby HibouAir sensor using a BleuIO USB BLE dongle. Renders it as a color bar with a simple “High CO2” warning when your threshold is crossed.

Real-Time BLE Air Quality Monitoring with BleuIO and Adafruit IO

Building a BLE-Powered Air Quality Dashboard with Grafana

This project showcases how to integrate the Renesas EK-RA4M2 microcontroller with a BleuIO BLE USB dongle to create a smart air ventilation system.

RealTime CO2 Status Indicator and Monitor with BleuIO & Renesas EK-RA4M2

This project will show how to collect Realtime Bluetooth low energy data and show it on web browser.

Get real time air quality data and generate chart