Gas detection module MQ-3 Alcohol / Ethanol Detection

Gas detection module MQ-3 Alcohol / Ethanol Detection
Gas detection module MQ-3 Alcohol / Ethanol Detection Gas detection module MQ-3 Alcohol / Ethanol Detection Gas detection module MQ-3 Alcohol / Ethanol Detection Gas detection module MQ-3 Alcohol / Ethanol Detection
Brand: Giga
Product Code: GASMQ3METHANE
Availability: 3
Price: R28.00
Ex Tax: R28.00
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Gas detection module MQ-3  (Methane Sensor Module)

Description:
 

  • Size: approx. 32 x 22 x 27mm
  • Main chip: LM393, ZYMQ-3 gas detector
  • Working Voltage: DC 5V
  • With signal output instructions.
  • Two-way signal output (TTL level output and analog output).
  • TTL output effectively signal for low level(when the output low level signal lights, can directly connected microcomputer).
  • Analog output 0 ~ 5v voltage, the higher the concentration, the higher the voltage.
  • Has a high sensitivity and good selectivity.
  • Has long service life and reliable stability.
  • Rapid response recovery features.
  • For motor vehicles and other prohibition drunken drivers homework personnel on-site testing, also used in other places of ethanol vapor detection.

Package Included:

1 x Gas Sensor Module


Pin Connection mode:

1. VCC: Positive (5 v)
2. GND: Connect power negative
3. DO: TTL switch signal output
4. AO: Analog signal output
Package Included:

 

Arduino exsample code

/* Testing MQ-sensors GAS sensor with serial monitor
   Suitable for detecting of LPG, i-butane, propane, methane ,alcohol, Hydrogen or smoke
   More info: http://www.ardumotive.com/how-to-use-mq2-gas-sensor-en.html
   Dev: Michalis Vasilakis // Date: 11/6/2015 // www.ardumotive.com                     */

const int gasPin = A0; //GAS sensor output pin to Arduino analog A0 pin


void setup()
{
    Serial.begin(9600); //Initialize serial port - 9600 bps
}

void loop()
{
    Serial.println(analogRead(gasPin));
    delay(1000); // Print value every 1 sec.
}

 

 

 

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