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Topic: Problem connect arduino with gsm shield v4 (Read 564 times) previous topic - next topic


Sep 01, 2017, 01:32 pm Last Edit: Sep 01, 2017, 01:43 pm by radamirez
Hi i am a newbie , i would realize an anti-theft auto with gsm module to comunicate via sms .
I would install a reed switch in the car and a magnete on the door.

My module not work  and i am not sure that the connection is ok, can you give me help ?

The module have 6 pins near the antenna and 3 pins for RS-232 interface and power. (as in the picture)

the six pins are:

R       |      T
GND   |    GND

I connect power at arduino 5v e GND , SIMR at Arduino Tx  and SIMT at arduino Rx .
but the module blink a led every second , why not work?


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