you can do it in one code only, you will need to figure it out and do it yourself.
you cannot do it over the internet, you will need to connect it to the system to reprogram it
Ok, if I can do in one code, and it will not take the whole memory, I will do that. And will not order the NodeMCU.
Thank you for the guidance, guys! When I make the code work I will post here, so other like me can use it.
Best wishes for the New Year!