The GSM stands for Global System for Mobile communications.  This is a global standard which is followed by the GSM modules inside the cellular phones which enables them to be connected with any mobile network around the globe. In certain applications the microcontroller based systems has to be connected with the GSM network which will enable a user to control the system by sending messages or making a call ...

This Instructable explains how to send an SMS from an Arduino using the Internet. There are many ways to approach this and I will explain one of the different methods used to accomplish this task. Some major points needed for my project: I have a standard Ethernet shield, and ENC28J60 Ethernet module, and I needed my program to work with both and also over a wifi connection (using the ESP8266 - I just order ...