Difference between revisions of "Carbon Monoxide Sensor - MQ-7"

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==Introduction==
 
==Introduction==
[[File:MQ11.jpg]]
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[[File:MQ11.jpg|150px]]
 
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[[File:MQ-7.jpg|300px]]
[[File:MQ-7.jpg]]
 
  
 
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
 
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
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==Specification==
 
==Specification==
  
[http://www.geeetech.com/Documents/MQ-7%20Datasheet[1].pdf MQ-7 datasheet]
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MQ-7 datasheet [http://www.geeetech.com/Documents/MQ-7%20Datasheet.pdf ]
  
 
==Usage==
 
==Usage==
[[File:MQ-4 pic.jpg]]
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[[File:MQ-7 wiring.jpg]]
  
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[[File:MQ-7 pic.jpg]]
  
 
  VCC - 5V
 
  VCC - 5V
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==How to buy it==
 
==How to buy it==
Click here to buy [http://www.geeetech.com/liquefied-petroleum-gas-sensor-mq6-p-192.html Gas Sensor - MQ-6]
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Click here to buy [http://www.geeetech.com/carbon-monoxide-sensor-mq7-p-295.html Gas Sensor - MQ-7]

Latest revision as of 07:59, 10 May 2012

Introduction

MQ11.jpg MQ-7.jpg

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.

Features

  • High sensitivity to CH4,Natural gas
  • Small sensitivity to alcohol, smoke
  • Fast response
  • Stable and long life
  • Simple drive circuit

Specification

MQ-7 datasheet [1]

Usage

MQ-7 wiring.jpg

MQ-7 pic.jpg

VCC - 5V
GND - GND
S   - Analog pin0

Example 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
}

How to buy it

Click here to buy Gas Sensor - MQ-7