I have a arduino nano and i buy a GSM shield to sent sms, someone can help me with connection GSM shield and arduino nano please?
Link to shield please?
Set the jumpers to select D2 & D3, D2 to Rx on the Nano and D3 to Tx?
See the link in my signature for further, general information.
but i think have to connect through a breadboard
If that's how you want to do it, go ahead.