> I suspect That was my first thought as well. The Arduino millis() function wraps back around to zero at around 50 days of uptime. https://www.arduino.cc/re

> I suspect That was my first thought as well. The Arduino millis() function wraps back around to zero at around 50 days of uptime. https://www.arduino.cc/reference/en/language/functions/time/millis/ https://www.arduino.cc/reference/en/language/functions/time/...