I want to share with the community my UPTIME solution (which can be even better) The original idea was to have some kind of diagnostics for power failure on my relay board. The millis() was a quite good to give me back the time since last system restart. The code here can convert millis() to days…

Arduino Uptime

Tvixen October 24, 2014, 1:16am 3

Thanks Limbo saved me 20 mins

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