Arduino DIY Breathalyzer With MQ3 Alcohol Sensor & OLED Display
How to make a DIY Breathalyzer with a cheap MQ3 sensor and Arduino
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In this simple project we take an MQ3 alcohol sensor and use a cheap Arduino micro-controller to read the values for alcohol content in our breath.
The MQ3 sensor values are not calibrated in any way so you should NOT be using this to determine if you should operate a vehicle etc. This is for entertainment only.
The code for both the serial readout and the OLED versions can be found on my GitHub here: https://github.com/MKme/Arduino-MQ3-A...
Enjoy your build! Share your modifications and improvements back and post a comment below. Would love to see your projects.
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