How to combine two sketches into one so that two sensors work at the same time?

Question

Arduino

There are two sensors BMP-280 and MQ-2 and there are two sketches for them working separately, but you need to work together in one sketch with connection to NodeMCU

Answer 1

understand the sketch code, transfer everything related to the MQ-2 sensor to the BMP-280 code.
those. from setup to setup , from loop to loop, and so on.
actually, as far as I remember, MQ-2 works simply through an analog input, there will be three lines of code in total ...

Answer 2

What's the problem? You add the missing code from one sketch to another. The main thing to remember is that the BMP-280 uses hardware I2C (pins A4, A5) so that A0-A3 are available for MQ-2