Alcohol Gas Sensor – MQ3

Alcohol Sensor – MQ3

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration

It gives 200 – 1000 as the range. Its value quickly increases when it detects the alcohol. Reset takes longer time

Circuit

Arduino Sensor
5V VCC
GND GND
A0 A0

 

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