Don’t worry occifer, there is no blood in my alcohol!

[Daniel] wrote up a quick tutorial on interfacing with the MQ-3, or better known Breathalyzer from SparkFun with Arduino. While we would have used perhaps an op-amp/comparator based system and kept it in a much smaller package, the idea was so quick and simple and enjoyable we hoped an article might keep some hackers from drinking and driving.

[Thanks CletustheYokel for pointing out our silly category mistake.]

Comments

  1. sneakypoo says:

    If you feel you need to use a breathalyzer to see whether or not you should drive then alarm bells should really be going off in your head already.

  2. CletustheYokel says:

    How is this filed under android hacks? Should that not be Arduino hacks? Even then, really… …really?

  3. moo says:

    probably misplaced with arduino

  4. Ben says:

    in response to the first poster, there have been times when I felt fine after having spent a night out having drinks. A couple of those times I had the opportunity to check my BAC, I took that opportunity, because it’s better to be safe than sorry. I’ve even had times I thought I was too drunk, but then had a breathalyzer tell me I was perfectly legal. I still didn’t drive though. Heck, I had trouble walking

  5. an'igan says:

    Finally an arduino project that’s actually useful.

  6. mrgoogfan says:

    Intoxometer

  7. localroger says:

    The only thing on the sensor datasheet that indicates how long you need to feed the 750 mW heater (5V across 33 ohms) to get it into a proper operating state is “preheat time — over 24 hour.” That isn’t encouraging from a portable or low-power perspective.

  8. Mike says:

    But how will you know you assembled it correctly if your drunk?

  9. Haku says:

    So without pre-heating it for the required time, and more importantly, calibration, it’s just an Arduino controlled LED toy?

  10. ReKlipz says:

    I can’t tell if the misspelling of officer is a mistake or not. Anyone else?

  11. wdfowty says:

    lol. almost as bad as drunk driving is drunk coding. be careful people.

    @ReKlipz: yeah he misspelled it on purpose (i hope). it’s part of the “saying”.

  12. bothersaidpooh says:

    Maybe a breathalyzer combined with a flicker fusion test would be more effective.
    You can be unsafe to drive with a BAC of 0.0, if you are so tired you can’t concentrate properly.

    Combine with a mini safe in the car and this could save lives.

  13. CRJEEA says:

    Now let’s see somone brave enuf to wire it into the ignition system of your car or bike so you can’t physicly drive drunk lol

  14. derp says:

    CRJEEA that is a really good idea.
    monitor ambient air for alcohol and if it detects it coming from the driver, lock out the keys or something

  15. strider_mt2k says:

    Partying while hacking has done in as many excellent creations as has led to their creation in the first place.

    GOOD TIMES! :D

  16. Agent420 says:

    Reminds me of when they first installed coinop breathalyzers in some local bars years ago… they actuall had the opposite intended effect because everybody was lining up to see who could blow the highest numbers ;-)

  17. Ottis. says:

    You hadz a zuse an ardwino..sheezus

  18. Squirrel says:

    But officer, I swear to drunk i’m not God!

  19. Bruno says:

    Has a video in the final of tutorial showing the project working, very cool

  20. Haku says:

    I’m not as think as you drunk I am.

  21. Tiago Silva says:

    The title couldn’t be better, occifer…
    I would prefer the PIC24FJ64GA002 to the Arduino… But this is a nice Arduino fans project!

  22. VEC7OR says:

    Problem officer ?

  23. Colin says:

    How accurate is this. Does anyone even have a good way to test the accuracy? I know most of the ones that you can buy at the store are usually *completely* off.

  24. TheLegato says:

    This would actually be very useful in my honest opinion. Imagine you’re throwing a party, and you don’t want people driving home drunk and as you all might know, people are likely to be stubborn about wanting to drive what with conflicted judgment via intoxication. This device would allow the person throwing the party to collect keys at the door and require someone to pass the breathalyzer to get their keys back upon leaving.

  25. dougefresh says:

    Hey, a good reason to start drinking again.

  26. dougefresh says:

    He should make one that test for cannibanoids too, just a thought.

  27. D- says:

    Surely no blood in my alcohol, was a tip off that the misspelling if officer was intentional? Hopefully no one considers this more than a novelty toy.

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