Introduction

The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.

Specification

Connecting Diagram

Analog Gas Sensor

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);
}

Version history

Analog Gas Sensor(MQ3) V1

More Documents

DFshopping_car1.png Get Analog Gas Sensor(MQ3) from DFRobot Store or DFRobot Distributor.

category: Product Manual category: SEN Series category: Sensor

category: Diagram category: DFRobot

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