Air Quality & Particulate Sensor

This is the model for a simple air quality monitor I built. The system is powered by USB and uses an ESP32C3 Mini as the core. A BME688 air quality board is used to detect temperature, humidity, and VOC concentration, while an enclosed PMSA003 particulate sensor monitors for particulate density in the air. I&#39;ve been using it between my FDM and resin printers, to ensure that fumes dissipate appropriately. An example Arduino sketch is included below. This balances the VOC index to a representative level, and generates ‘GOOD,’ ‘OK,’ and ‘DANGER’ messages on the screen as thresholds are passed. Next iteration will include a better USB connection, to allow for sketch changes etc without disassembly. The current BOM is: I2C 1.3&#34; OLED SH1106 screen<a target="_blank" rel="noopener noreferrer ugc" href="https://thepihut.com/products/bme688-4-in-1-air-quality-breakout-gas-temperature-pressure-humidity?variant=40247361994947&country=GB&currency=GBP&utm_medium=product_sync&utm_source=googl