Smart Desktop Air Quality Monitor (ESP32 / SEN66)

This device uses an ESP32 and the Sensirion SEN66 to track 9 different air quality metrics (PM1, PM2.5, PM4, PM10, VOCs, NOx, CO2, Temperature, and Humidity) and displays them on an e-ink screen. It connects natively to Home Assistant and the firmware is written using ESPHome.

Its designed to be discreet but informative. The screen on the front instantly communicates if theres something to do, and the details screen tells you more precisely whats happening in the air around you. It connects to Home Assistant to enable polished UI data visualisations and smart automations (like announcements or automatically switching on an air purifier with a smart plug).

Parts List, PCB files, Firmware and all other project details can be found on Github.

The Research and Build video can be found on YouTube.