Arduino GSM Shield 2 integrated Antenna

The Arduino GSM Shield 2 connects your Arduino to the internet using the GPRS wireless network. Just plug this module onto your Arduino board, insert a SIM card from an operator offering GPRS coverage, and follow a few simple instructions to start controlling your world through the internet. You can also make and receive voice calls (an external speaker and microphone circuit are required) and send and receive SMS messages.

As always with Arduino, every element of the platform—hardware, software, and documentation—is freely available and open-source. This means you can learn exactly how it's made and use its design as the starting point for your own circuits. Hundreds of thousands of Arduino boards are already fueling creativity all over the world every day. Join us now; Arduino is for you!

The Arduino GSM Shield allows an Arduino board to connect to the internet, make and receive voice calls, and send and receive SMS messages. The shield uses a radio modem M10 by Quectel. It is possible to communicate with the board using AT commands. The GSM library has a large number of methods for communication with the shield.

The shield uses digital pins 2 and 3 for software serial communication with the M10. Pin 2 is connected to the M10's TX pin, and pin 3 is connected to its RX pin. The modem's PWRKEY pin is connected to Arduino pin 7.

The M10 is a quad-band GSM/GPRS modem that works at frequencies GSM850MHz, GSM900MHz, DCS1800MHz, and PCS1900MHz. It supports TCP/UDP and HTTP protocols through a GPRS connection. The maximum GPRS data downlink and uplink transfer speed is 85.6 kbps.

To interface with the cellular network, the board requires a SIM card provided by a network operator. The most recent revision of the board uses the 1.0 pinout on revision 3 of the Arduino Uno board.