hi every body ! i found a source code to use RTC DS1307 and display time on LCD1602. When i upload code to arduino. The time on LCD is correct. But when i unplug USB cable and then plug it to computer again. the time is not correct. Please help me correct it ! Thanks here is my code : by Leoc…

Realtime clock running not correct

Zapro April 6, 2013, 6:03am 3

How is the RTC chip able to keep time when you haven't included a battery ?

Refer to the datasheet for the RTC to see how to connect up a battery.

// Per.

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