Air filter controller

This is the software component to the controller I built to control my "Bento Box" air filter for my 3D printer. It is written in C and is designed to be very configurable with different thresholds for turning the fans on/off, integrating with the MQTT server for the Bambu printer, and polling a temperature/humidity sensor and VOC sensor.

It also exposes a JSON API over an HTTP server that runs on the ESP32 itself, which you can use to get sensor data and set thresholds.