Iduino ME075 User guide

IDUINO for maker’s life

User Manual

For

MQ-3 Alcohol Ethanol Gas Sensor(ME075)

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IDUINO for maker’s life

Pin

Description

Vcc

Power supply 5V/DC

Gnd

ground

D0

Digital signal read pin

A0

Analog signal read pin

Specification:

 Sensitivity adjustable the blue digital potentiometer adjustment (Figure)
 Before the use of the operating voltage 5V power supply at least warm-up for

more than two minutes, the sensor slightly hot is normal;

 Output in the form
 analog voltage output
 digital switching outputs (0 and 1)
 With fixed bolt hole for easy installation

Pinout

Example

Wire connection as below:

Vcc----------5V

GND----------Gnd

A0----------A1

*********Code Begin************

void setup() {

// initialize serial communication at 9600 bits per second:

Serial.begin(9600);

}

// the loop routine runs over and over again forever:

void loop() {

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