//Include the library #include <MQUnifiedsensor.h> /*****Hardware Related Macros*****/ #define Board ("Arduino UNO") #define Pin (A4) //Analog input 4 of your arduino ...

There are no codes available for simultaneous use for the MQ-4 and MQ-8 on the Internet. I created a sample code for new Arduino users and those with analogue reading difficulties. It is a very ...