Geeetech

I am still reading the manual carefully.

As you can see from the attachment I follow your instructions, load the following sketch to arduino:

//Serial Relay - Arduino will patch a
//serial link between the computer and the GPRS Shield
//at 19200 bps 8-N-1
//Computer is connected to Hardware UART
//GPRS Shield is connected to the Software ...

Is it possible to send me any code that you have tested in order to SEND a simple SMS using the SIM900 board because I open the wiki page and the code is to complicated and according to the documentation does a lot of things at once. The hardware installation that I have done is the following (plug ...

Additional information:
1) the SIM900 lights every 3 seconds (seems that recognizes the VODAFONE network)
2) when I call this SIM number with my mobile it is called OK (I heard the related sound OK)
3) the SIM900 shild it set to work with software settings (default value)

but ..... the arduino ...

Yesterday I bought a SIM900 shield and tried to run arduino examples on it. I load sketches from the GSM examples and all of them are failed to pass the SETUP function

while (notConnected)
{
if (gsmAccess.begin(PINNUMBER) == GSM_READY)
notConnected = false;
else
{
Serial.println("Not ...