As part of their long-running Arduino tutorial series, the people at tronixstuff have written in clear detail methods of using inexpensive SIM900 GSM shields to make calls and send SMS text messages. Although there are many shields on the market, the documentation is generally not the clearest, so this tutorial could make life a lot easier. It begins with the correct setup, configuration and power notes - then follows with example functions that demonstrate how to have your Arduino make a telephone call, send SMS text messages and also how to incorporate variable data into the messages to send, for example:
With the included instructions you have the ability to create all sorts of Arduino mobile notification systems, so to learn how visit the tutorial. And for more, we're on twitter and Google+, so follow us for news and product updates as well.