The Grove - Gas Sensor(MQ5) module is useful for gas leakage detecting(in home and industry). It can detect LPG, natural gas, town gas and so on.
The Grove - Gas Sensor(MQ5) module is useful for gas leakage detection (in home and industry). It can detect LPG, natural gas, town gas and so on. Because it has a fast response time once it has pre-heated, measurements are almost instantaneous. Note that the sensitivity can be adjusted by the potentiometer.
Connect this module to the analog pin of Grove Base Shield. You can detect the voltage from the sensor through the SIG pin. The higher the concentration of the gas, the higher the output voltage on the SIG pin. Sensitivity can also be regulated by rotating the potentiometer. Please note the best preheat time of the sensor is about 24 hours. For the detailed information about the MQ-5 sensor please refer to the datasheet.
Please note that the MQ5 sensor is rated to draw (less than) 800 mW @ 5v (160mA) for the sensor heating module. When powering the sensor off your MCU, make sure that your voltage regulator has enough capacity to handle the MQ5 in addition to its other responsibilities.