Sending SMS text messages from an Arduino can be difficult and expensive - for example a GSM shield, aerial and adequate power supply can cost over $150 once configured correctly. Or you can connect your Arduino to a PC and use a variety of online services. However both are much more complex than this new inexpensive solution created by Jeff Murchson. He has simply used an inexpensive Motorola GSM phone which is controlled by any Arduino board. As the phone can accept AT commands via a serial connection, it is a simple matter for the Arduino to control the phone - and send text messages.
When experimenting with such projects, make sure you use a prepaid or unlimited SMS account to avoid bill-shock. Nevertheless to get started check out Jeff's project page. And we're on twitter and Google+, so follow us for news and product updates as well.