We’re exploring a whimsical project to collect breathalyzer data from various locations for use in visualizing local trends in intoxication. This weekend I completed the first step by prototyping simple hardware that reacts to various amounts of booze on the breath. It’s not intended to be a finely calibrated measurement tool at all. We intend to do only simple “t-shirt” sizing for inebriation: small, medium or large. The first model uses the MQ3 Alcohol Gas sensor and gets a significant jumpstart from Daniel Andrade’s implementation. Here’s a video of the first test. It plays “Take on Me” when you’re drinking and “Mission Impossible” when you’re soused. Breadboard and schematic for the next iteration below.