Looking for an electronics project that doubles as a safety device? Check out this open source breathalyzer, whose creator offers an additional suggestion for how to utilize the device:
The GfxHax drink shield is an Arduino shield that converts an arduino into an Open Source Breathalyzer. It come complete with a light bar to show the intoxiciation levels. There is a series of 11 lights down one side of the shield that go from green to yellow and ultimately to red. There are also player ready lights. Why are there player ready lights? Well, this is because the shield is not just a standard Breathalyzer but can be used as a party game. With the GfxHax drinkShield you also get a GPL game that lets you play with your friends and keep highscores!
[Via
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[link] sparkfun.com also has similar kit btw. Reading a datasheet on a similar alcohol-detector gave some insight into how inaccurate this can get tho. (all breathalizers) seeing as air-humidity and CO/co2 levels would interfere with the results. Also having friends getting the .3+ max % when testing themselves after drinking i would ask for the bloodworks if i ever get pulled for a DUI. Still a fun and if used correctly, a handy tool to check yo self ;)
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