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Topic: SIM800L interfacing with Arduino nano not working (Read 709 times) previous topic - next topic


I'm trying to interface SIM800L core module (Image attached) with Arduino Nano.

SIM800L is powered separately by Vcc 3.7V @1A.

Problem is SIM800L not registering to any network; I'm from Qatar, here there is only two networks.

Here is some results during configuration of SIM800L.
Without SIM card, signal quality command AT+CSQ -> +CSQ: 15,0
With SIM card, AT+CSQ -> +CSQ: 0,0

And network registration command, AT+CREG=? -> +CREG: (0-2)

What is the problem?
Please help..
Thanks in advance.

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