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Topic: Uno and GSM shield SIM900 (Read 2678 times) previous topic - next topic

Kivju

Hi,

i just bought a two Uno shields and two GSM shields.

No i have follow problems:

SIM900 modul and component U1: LM317 getting very hot.

I can upload codes to Uno and code running but GSM_GPRSLibrary_AT examble says in serial monitor ->
Code: [Select]
GSM Shield testing.
DB:NO RESP
DB:NO RESP
DB:NO RESP
ERROR: SIM900 doesn't answer. Check power and serial pins in GSM.cpp
status=IDLE


I was uncomment pins to GSM.cpp

Please tell what i do wrong.

Thanks any help

Flake

hi ya can u tell me what program u are using

martinka

I have the same problem
I am using Uno r3 and GSM shield from open-electronics (http://www.open-electronics.org/arduino-gsm-shield/)
I did un comment #define _GSM_TXPIN_ 5 and #define _GSM_RXPIN_ 4 in GMS.cpp.
Trying to run "GSM_GPRSLibrary_Client.ino" from SIM900IDE100

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