Hello everyone, I am trying to use the arduino module sim800l but when i try to send some at command, like a siple AT, I get in response '???' in loop and I do understand the cause of this. Another problem is the alimentation of this module that requires 2-3 A when it send messages, for now i would…

Comunication with module sim800l

UKHeliBob September 2, 2021, 8:46am 4

Your post was MOVED to its current location as it is more suitable.

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