EB - Carbonic Oxide Sensor MQ7


  • Model: EB0200910B
  • Shipping Weight: 10gram
  • 9993 Units in Stock

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Item specifics

Brand Name:Maker Studio

Product Description

Electronic Brick - CO (Carbonic Oxide) Sensor (MQ7) can be used to detect Carbon Monoxide, Coal Gas, Liquefied Gas and so on.


  • Working Voltage: 5V
  • Heating consumption: 0.5 ~ 800 mW
  • Operating Temperature: -25 ~ +85 degree centigrade
  • Analog output and digital output
  • Fast response time
  • Adjustable load resistance
  • With Makerduino Demo Code
  • With Signal Light
  • Weight: 6g



  • CO detector





Use with Makerduino

The following steps show how to use EB - CO Sensor with Makerduino.


  • Makerduino
  • Electronic Brick Shield
  • EB - CO Sensor
  • A/B type USB cable
  • Female DuPont wires


1. Connect Electronic Brick Shield onto Makerduino to bring out all the Makerduino Pins.



2. Connect EB - CO Sensor to Makerduino as following.



3. Connect the Makerduino to Computer by the USB cable.


4. Download the Makerduino demo code EB - CO Sensor.zip. Unzip the code directly into the libraries folder.


5. Open Makerduino IDE, choose the right Board and Serial Port. Open the sketch EB_CO_Sensor.ino and upload it to the Makerduino.

The following is the demo code for EB - CO Sensor. (Note: It could be a little different from the code file downloaded. Please follow the downloaded file.)


  EB - CO Sensor Demo Code


  The CO Sensor detect the related Gas density,

  Makerduino get the result by anologRead.

  The output value changes larger as long as the density of the gas.

  Connect the Sensor to A0 in this demo;




void setup() {




void loop() {

  int sensorValue = analogRead(A0);





6. Check the Results. After the sketch is successfully uploaded, let's open the Serial Monitor. The Monitor will display following information that when the sensor detects CO, the output value will rise. You can revised data through adjusting the potentiometer according to the actual condition.



Download information


Find EB - CO Sensor.zip to download schematic and other material.

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This product was added to our catalog on Tuesday 11 February, 2014.

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