He didn’t sell his clients Arduinos + shields I hope. The SIM548C is a pretty cheap GPS+GSM/GPRS combo as well. Comes in SMT versions as well, and can be really cheap depending on how much ...

Arduino GSM 4 Articles . ... The sketch is set up so that after the 10th digit is read, the phone call is placed using an off the shelf GSM shield and associated library.

Arduino devices have had the option of a GSM linkup for awhile, but getting that cellular link to truly strut its stuff hasn't always been easy, even for those of us who'd be inclined to program ...

Features of the Arduino GSM Shield Cellphone. As with any phone, the Arduino GSM Shield cellphone allows you to store names and phone numbers, display the time, and serve as an alarm clock.