millis() wraparound

[jacobeva]

Apparently, millis() will wrap around to 0 after roughly 49 days of execution time. In environments where the RNode may be left unattended, this could be an issue, and cause weird behaviour.

I need to check if this is a real problem or not.

See:
https://www.arduino.cc/reference/en/language/functions/time/millis/

[jacobeva]

https://arduino.stackexchange.com/questions/12587/how-can-i-handle-the-millis-rollover