This guide explores using a gas sensor to detect milk freshness as an alternative to the traditional sniffing method. By combining an Adafruit CLUE microcontroller with an SGP30 Air Quality Sensor, users can build a digital nose device capable of identifying spoiled milk through chemical detection. The project is designed as a beginner-friendly science experiment that requires no soldering.
Key components and topics:
Using the SGP30 gas sensor for VOC and eCO2 detection
Integrating Adafruit CLUE with CircuitPython
Building a digital freshness checker device
Conducting experiments to detect spoiled milk gases