How To Smell Pollutants using an Arduino

This Instructable explains how to use a gas sensor with your Arduino. This lets your Arduino smell (and hence you program responses to) overall gas levels for a variety of nasties, including ethanol, methane, formaldehyde, and a bunch of other volatile organic compounds. My cost to make this actual device was under $100, including the full Arduino kit. And no, I won't put a shirt on:-) I've got kits / finis ...

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