The MQ6 Gas Sensor module is useful for gas leakage detection. They are used in gas leakage detecting equipments in home and industry, are suitable for detecting of LPG, iso-butane, propane, LNG, avoid the noise of alcohol , cooking fumes and cigarette smoke. Due to its high sensitivity and response time, measurements can be taken as soon as possible.
The sensitivity of the sensor can be adjusted by using the potentiometer.
mq-6
FEATURES
* High sensitivity to LPG, iso-butane, propane
* Small sensitivity to alcohol, smoke.
* Fast response .
* Stable and long life
* Simple drive circuit
Connection
here are the connections for my sensor
| Arduino | Gas Sensor |
|---|---|
| 5V | VCC |
| GND | GND |
| NC | DO |
| Analog A0 | AO |
Code
[codesyntax lang=”cpp”]
void setup()
{
Serial.begin(9600);
}
void loop()
{
float sensorVoltage;
float sensorValue;
sensorValue = analogRead(A0);
sensorVoltage = sensorValue/1024*5.0;
Serial.print("sensor voltage = ");
Serial.print(sensorVoltage);
Serial.println(" V");
delay(1000);
}
[/codesyntax]
Results
Again look at the serial monitor, in this case I noticed that it took about 3 minutes for the readings to stabilise, something you may want to factor in
sensor voltage = 1.14 V
sensor voltage = 1.44 V
sensor voltage = 1.71 V
sensor voltage = 1.95 V
sensor voltage = 2.16 V
sensor voltage = 2.32 V
sensor voltage = 2.46 V
sensor voltage = 2.55 V
sensor voltage = 2.56 V
sensor voltage = 2.47 V
sensor voltage = 2.28 V
sensor voltage = 2.08 V
sensor voltage = 1.90 V
sensor voltage = 1.76 V
sensor voltage = 1.63 V
sensor voltage = 1.52 V
sensor voltage = 1.43 V
sensor voltage = 1.34 V
sensor voltage = 1.26 V
3 minutes worh of readings
sensor voltage = 0.40 V
sensor voltage = 0.40 V
sensor voltage = 0.40 V
sensor voltage = 0.39 V
sensor voltage = 0.39 V
sensor voltage = 0.39 V
sensor voltage = 0.39 V
Links
Mq-6 gas sensor specifiication
MQ-6 Liquefied Petroleum Gas Sensor Liquefied Isobutane Propane Module
