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Topic: RX and TX for Arduino Mega is not working (Read 72 times) previous topic - next topic


Hello Friends, i need help please

I bought arduino Mega and i try to communicate with my SIM800l but is not responding, any help please.


Geek Emeritus

you come up a little short on detail

read the bottom half of my signature line

come back with a copy of your sketch, posted as described in those instructions

you do know that you connect TX on the GPS to RX on the Arduino, and vice versa?
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