The arduino can be restarted, so if the rtc module is adjusted within the setup function using the compilation time, it can leads to a miscoordination between differents arduinos because of the sleeping mode. So the rtc should be configurated an a different sketch before connect it to the whole system. Even more, in the future it could be configurated using the sim800L time or so.
The arduino can be restarted, so if the rtc module is adjusted within the setup function using the compilation time, it can leads to a miscoordination between differents arduinos because of the sleeping mode. So the rtc should be configurated an a different sketch before connect it to the whole system. Even more, in the future it could be configurated using the sim800L time or so.