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Topic: Code is running with USB ( in IDE) but not running with battery power. (Read 365 times) previous topic - next topic



I am using Arduino uno with gsm shield.

my sketch code is running fine with USB (in IDE serial monitor ) but NOT running in standalone , when powered by battery.  Please help.


What type of battery? How is it wired? To 5V or to Vin or to the barrel jack or ...
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Electronics engineer by trade, software engineer by profession. Trying to get back into electronics after 15 years absence.

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