Air Quality & Particulate Sensor
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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'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:
BME688 Breakout Air Quality Sensor
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