x3xplosiiv3x:
I had seen that post, I don't know why but I can not grasp the concept of how to do it.
If you explain what you don't understand I will try to help.
The idea is that there are several functions and each of them runs very briefly and returns to loop() so the next one can be called. Long running processes are achieved a tiny piece at a time. And there may be dozens of calls to some functions before it is actually time for anything to happen.
...R