SEN0132 - DFRobot - Datasheet.Live

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CarbonMonoxideGasSensor(MQ7)(SKU:SEN0132)

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Contents

 1 Introduction

1.1 Specification

 2 Pin Definition

 3 Connection Diagram

 4 Sample Code

Introduction

The MQ7 is a simple-to-use Carbon Monoxide (CO) sensor suitable for sensing CO concentrations

in the air. It can detect CO-gas concentrations anywhere from 20 to 2000ppm. The sensitivity can be

adjusted by the potentiometer.

Specification



Power supply needs: 5V

 Interface type: Analog

 Pin Definition: 1-Output 2-GND 3-VCC

 High sensitivity to carbon monoxide

 Fast response

 Stable and long life

 Size: 40x20mm

PinDefinition

1. Signal Output

2. GND

3. Power

Analog Sensor Pin Definition

ConnectionDiagram

Analog sensor connection diagram

SampleCode

///Arduino Sample Code

void setup()

{

Serial.begin(9600); //Set serial baud rate to 9600 bps

}

void loop()

{

int val;

val=analogRead(0);//Read Gas value from analog 0

Serial.println(val,DEC);//Print the value to serial port

delay(100);

}

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