The BME680 air-quality monitor is now open source

Sat, 01 Aug 2026 10:00:00 +0000

The BME680 air-quality monitor from last month’s build post is now on GitHub under MIT:

It is a BME680 on a Raspberry Pi Zero W, sampling temperature, humidity, pressure, and a relative air-quality score every 10 seconds into SQLite, behind a password-gated Flask dashboard and a Cloudflare named tunnel. The build post explains how each part works.

What is in the repo ¶

The full project: the collector thread, the scoring with its rolling gas baseline, the derived dew point and sea-level pressure, the SQLite storage with bucketed charts, the Discord and ntfy alerting, and the installable PWA dashboard. Configuration is a single TOML file, and most settings are also editable live from the dashboard.

Building a BME680 air-quality monitor on a Raspberry Pi Zero W

Wed, 22 Jul 2026 10:00:00 +0000

A BME680 on a Raspberry Pi Zero W. It samples temperature, humidity, pressure, and a relative air-quality score every 10 seconds into SQLite, and serves a password-gated Flask dashboard over a Cloudflare named tunnel.

🔗 Repo: github.com/jamieede123/airquality — MIT licensed, runs without hardware via a FakeSensor, 150 tests. Stars and issues very welcome.

The air-quality number is a relative 0 to 100 score, higher is cleaner. It is not a calibrated AQI. The gas sensor reads VOC resistance in ohms, which means nothing in isolation. The score compares the current reading against a rolling baseline of clean air in the same room, covered below.

IoT on Jamie Ede

The BME680 air-quality monitor is now open source

What is in the repo ¶

Building a BME680 air-quality monitor on a Raspberry Pi Zero W