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Arduino + MQ3 = alcohol breath tester

Posted on Friday, December 17th, 2010 in Arduino, measurement by the machinegeek

This the season for good cheer, and what can be more cheerful than a project that’s as much fun to use as it is to build? How about a homebrew alcohol breath tester? Daniel Andrade shows how to build just such a device using just an Arduino, MQ3 alcohol sensor and a handful of resistors and LEDs. While this project is for academic and experimental purposes only, we suggest testing its calibration often.

This entry was posted on Friday, December 17th, 2010 at 11:41 pm and is filed under Arduino, measurement. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

2 Responses to “Arduino + MQ3 = alcohol breath tester”

  1. m.karthick says:

    please send the full details about this project and circuit diagram

  2. lee says:

    Please send me the circuit for this experiment

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