This is quite similar to a project that we did in college as part of a introduction to data science course. The professor built a sensor using an array of diff

This is quite similar to a project that we did in college as part of a introduction to data science course. The professor built a sensor using an array of different smoke detectors, then pumped air over different liquids (coffee, Coke, OJ, etc) then through the sensor array, capturing the signal strength in a text document. We used different classification techniques to determine the composition of unknown liquids.