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IDUINO for maker’s life
User Manual
For
MQ-5 Smoke Gas Detector Sensor
Module For Arduino (ME079)
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IDUINO for maker’s life
Description:
The MQ5 is used in gas leakage detecting equipment in consumer and industry
applications,this sensor is suitable for detecting LPG, natural gas, coal gas. Avoid the
noise of alcohol, cooking fumes and cigarette smoke. The sensitivity can be adjusted
by the potentiometer.
Specification
Specification:
Power supply needs: 5V
Interface type: Analog
High sensitivity to LPG, natural gas, town gas
Small sensitivity to alcohol, smoke
Fast response
Stable and long life
Simple drive circuit
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IDUINO for maker’s life
Pin
Description
Vcc
Power supply 5V/DC
Gnd
Ground
D0
Digital output pin
A0
Analog output pin
PinOut
Example
In this example, we use the analog output pin A0 to sense the change of environment
gas concentration. And output corresponding voltage between 0~5 V.
Wire connection as below:
Vcc-------------5V
Gnd-------------Gnd
A0--------------A0
********Code Begin*********
void setup() {
Serial.begin(9600);
}
void loop() {
float sensor_volt;
float sensorValue;
sensorValue = analogRead(A0);
sensor_volt = sensorValue/1024*5.0;
Serial.print("sensor_volt = ");
Serial.print(sensor_volt);
Serial.println("V");
delay(1000);
}
********Code End*********
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IDUINO for maker’s life
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