Arduino Powered Phone Kit Offers DIY Handset Design
The device can be shipped along with Arduino’s Uno, MEGA, and Leonardo boards, and the GSM Shield itself comes with a SIM card. (You can, however, use whatever SIM card you like.) With the shield, you can implement features such as making and receiving phone calls and sending and receiving SMS messages.
The shield is available now directly from the Arduino store online for about $90 USD, with wider availability starting on March 25th. Grab a case of Mountain Dew, stock up on Ranch Doritos, and clear your weekend, because this is sounds like an enormously entertaining project to tackle.