This library allows you to read the MQ sensors very easily.
This library allows an Arduino/Genuino/ESP8266 board to read MQ Sensors (AIr quality meter) references: MQ2, MQ3, MQ4, MQ5, MQ6, MQ7, MQ8, MQ9, MQ131, MQ135, MQ303A, MQ309A.
Maintainer: Miguel Califa
This library is compatible with the avr architecture so you should be able to use it on the following Arduino boards:
To use this library, open the Library Manager in the Arduino IDE and install it from there.