mark = 0;
}
}
Result
Trouble shooting
Thank the guy to share this great way to update DS1307 clock through computer, in this way, you
could get the precise time.
Guide Link
http://www.lucadentella.it/en/2013/11/27/rtcsetup/
Download
library
https://github.com/adafruit/RTClib
Download
sketch & pc_software
https://github.com/lucadentella/RTCSetup
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visit DFRobot Forum
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