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Topic: SIM 900 Module using arduino GSM library (GPRS) (Read 2620 times) previous topic - next topic



I have a Sim 900 based module.

I am trying to use the arduino examples to establish an internet connection. These are based on the telefonica modem.

The issue I am facing is that the arduino does not do anything. Both serial ports appear dead.
Is there any signal the modem needs to send to the arduino to say its ready before the at commands are sent?

I can only find information about pins 2 and 3 which are the software serial for the telefonica modem

Kind Regards

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