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Error In begin subroutin #5

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fadiramzi opened this issue Dec 14, 2016 · 0 comments
Open

Error In begin subroutin #5

fadiramzi opened this issue Dec 14, 2016 · 0 comments

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@fadiramzi
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while i testing the GSM_SMS Example,I got this message at serial monitoring:

RROR: SIM900 doesn't answer. Check power and serial pins in GSM.cpp

my arduino type is Uno,board is connected to 12 volt power and put on arduino board,the led flashing slowly so gsm ok,but why i got this message please help me
my gsm gps bluetooth board type is sim808
thanks
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@fadiramzi