Alcohol Gas Sensor MQ-3

Description:

This alcohol sensor is suitable for detecting alcohol concentration on your breathjust like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simpleall it needs is one resistor. A simple interface could be a 0-3.3V ADC.
Please review the datasheet for conversions to ppm then Wikipedia.org for BAC.

Dimensions:

  • 16.8mm diameter
  • 9.3 mm height without the pins

Features:

  • 5V DC or AC circuit
  • Requires heater voltage
  • Operation Temperature: -10 to 70 degrees C
  • Heater consumption: less than 750mW

Documents:

Mikroelectron Code:

int sensorValue;

void setup()

{

  Serial.begin(9600); // sets the serial port to 9600

}

void loop()

{

  sensorValue = analogRead(0); // read analog input pin 0

  Serial.println(sensorValue, DEC); // prints the value read

  delay(100); // wait 100ms for next reading

}

5 JD
Quantity
23 in stock
5 JD 1+ units
4.75 JD 10+ units
4.5 JD 25+ units
4.25 JD 100+ units



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