A hackable air quality sensor sensor from IKEA
Supports ESP32 and Home-assistant
https://www.ikea.com/in/en/p/vindriktning-air-quality-sensor-80498246/Open linkView original on kerala.partyhttps://www.ikea.com/in/en/p/vindriktning-air-quality-sensor-80498246/Open linkView original on kerala.party
https://style.oversubstance.net/2021/08/diy-use-an-ikea-vindriktning-air-quality-sensor-in-home-assistant-with-esphome/
you can even buy drop in boards that supports more sensors https://github.com/LaskaKit/ESP-Vindriktning