A GSM shield allows the Arduino to connect to a cellular network. This opens the door to many interesting solutions, especially outdoors.
You can for example control the Arduino with SMS messages and the Arduino can send back SMS messages.
I will upload an example tomorrow that shows how to work with the GSM shield.
You can for example control the Arduino with SMS messages and the Arduino can send back SMS messages.
I will upload an example tomorrow that shows how to work with the GSM shield.