The MQ-3 Alcohol sensor detects alcohol concentration on a human’s breath, just like the one you can find commonly on Breathalyzer. If you want to build your own Breathalyzer or want to add feature in your project where you can detect the level of alcohol content on a person, this module is perfect use for.
This sensor is easy to interface to your Arduino or Raspberry Pi. It only needs a 5V and GND and you can get the specific Analog Output for the level of alcohol detected on the Analog pin of the board. Also a Digital Output pin if you want to automatically get a high/low output for a certain alcohol threshold detection.
Features / Specifications
MQ-3 Alcohol Ethanol Sensor Module
Tutorials / Manuals / Documents