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Topic: [Solved] Arduino Mega 2560 + GPRS Sim900 Shield problem (Read 3797 times) previous topic - next topic

Mahmood

Oct 11, 2014, 11:11 pm Last Edit: Oct 12, 2014, 09:58 pm by Mahmood Reason: 1
Hi;

I have Arduino Mega 2560 and GSM/GPRS SIMCom SIM900 shield.

I uploaded the MakeVoiceCall code included in GSM library, mounted the shield on Mega and connected pin 2 with pin 1. I have SIM card installed into the shield. BUT when I open the monitor I only get the response "Make Voice Call", it seems that the program get stuck at statement (gsmAccess.begin).

the SIM card doesn't have PIN number.

please help

dannable

The GSM library provided with the IDE is intended for use with the official Arduino GSM/GPRS shield. You might be better off using a library designed for use with the SIM900 or use AT commands directly.
Beginners guide to using the Seeedstudio SIM900 GPRS/GSM Shield

Mahmood

The problem is solved. I bought a new 9V battery and it worked just fine.  :D

Mahmood


The GSM library provided with the IDE is intended for use with the official Arduino GSM/GPRS shield. You might be better off using a library designed for use with the SIM900 or use AT commands directly.


the shield work just like the arduino shield just need to be powered from external battery.

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