Air Quality DIY system

# Air Quality station

*A simple yet powerful system for Air Quality monitoring.*

**By:** JP Gleyzes

## Overview
This DIY air quality monitoring system integrates precision sensors with a connected processing platform and a low-power e-paper display.

**It monitors:**
* Temperature
* Pressure
* Humidity
* CO2 level
* Air quality (particulates/dust)

## System Architecture

* **Processing Unit (Core):** The **[ESP32 S2 Lolin mini](https://fr.aliexpress.com/item/1005009711874009.html)** manages the sensors. It offers native Wi-Fi connectivity, ideal for sending data to dashboards (Home Assistant, InfluxDB, or MQTT). *However, for this project, I preferred a simple e-paper display without any Wi-Fi connection!*

* **Display:**
* **[3.7-inch E-Paper](https://fr.aliexpress.com/item/1005009712159337.html) (240x416):** Electronic ink technology allowing for static data display with zero power consumption between refreshes, ensuring a clear and readable interface.

* **Air Quality Sensor