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sentence=Simple library to read and interpret data from the MQ2 snesor.
paragraph=Based on this page: Sandbox electronics. The following page it's also useful if you want to know how to calibrate the sensor (it's for MQ-6 sensor but it works as the MQ-2 does): http://www.savvymicrocontrollersolutions.com/index.php?sensor=mq-6-gas-sensors.