ESPHome provides built-in support for the BME680 sensor with a fully open-source implementation; however, it is not compatible with all the sensor’s features. The project also includes Bosch’s proprietary BSEC v1 software library, which provides all features, but it only runs on the original ESP32, making it incompatible with the ESP32-S2 or ESP32-C3.

During my search for a small and cheap ESP32 board to use with ESPHome IoT projects, I stumbled upon the amazing ESP32-S2 Mini. This board is the compact and low budget option I was looking for, and while it is available on AliExpress from various sellers, there are a few details to consider.