The Grove - Gas Sensor(MQ2) module for Arduino is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on.
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Open the Gas_Sensor.ino file by the Arduino IDE. Build and upload the codes to the UNO board. After downloading, you can run SSCOM to connect the MQ2 module so as to check the sensor. Expected result The sensor needs to preheat for about a minute to heat the internal sensitive material...
its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm.The sensor can operate at temperatures from -20 to 50°C and consumes less than 150 mA at 5 V. Please read theMQ2 datasheet(184k pdf) for more information about the sensor. ...
Serial.print(sensor_volt); Serial.println("V"); delay(1000); } Measurement : Approximation This examples demonstrates a way to know the approximate concentration of Gas. As per the data-sheet of the MQ9 sensors, these equations are tested for standard conditions and are not calibrated. ...
Serial.print(sensor_volt); Serial.println("V"); delay(1000); } Measurement : Approximation This examples demonstrates a way to know the approximate concentration of Gas. As per the data-sheet of the MQ5 sensors, these equations are tested for standard conditions and are not calibrated. ...