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SIM800L not responding

Open ndhambi opened this issue 7 years ago • 0 comments

I have made the conection between Arduino and the SIM800L and programmed it, The problem is that the SIM800L does not respond to any commands, It turns on and the green LED remains ON all the time while the red LED flashes every 5 seconds.

ndhambi avatar Jan 16 '19 20:01 ndhambi