How to Build a BreathalyzerBy crazydragonking99 in CircuitsArduino7,6549 Guides to build a breathalyzer. Now you can find out if your friend is too drunk to play karaoke (but still don't let him drive!) Guides to build a breathalyzer. Now you can find out if your friend is too drunk to play karaoke (but still don't let him drive!) Arduino Breathalyzerby Bot1398 in ArduinoBoozeduinoby Grissini in ArduinoDIY Portable Breathalyzer - Submitted by BayLab for the Instructables Sponsorship Programby aloishis89 in SensorsThe Talking Breathalyzer Mark IIby EngineeringShock in MicrocontrollersBreathalyzer Microphoneby randofo in ArduinoThe Lightning Simulator/Breathalyzer/Graphic Equalizer - Arduino Poweredby alinke in ArduinoThe Talking Breathalyzerby alinke in Arduino