The Cellular Shield for Arduino includes all the parts needed to interface your Arduino with an SM5100B cellular module. This allows you to easily add SMS, GSM/GPRS, and TCP/IP functionalities to your Arduino-based project. All you need to add cellular functionality to your Arduino project is a SIM card (pre-paid or straight from your phone) and an antenna and you can start sending Serial.print statements to make calls, send texts and serve web pages!

The main components of the Cellular Shield are a 60-pin SM5100B connector, a SIM card socket, and an SPX29302 voltage regulator configured to regulate the Arduino's raw voltage to 3.8V. The board's red LED indicates power. The Arduino's reset button is also brought out on the shield.

Two solder jumpers on the board allow you to select which serial pins interface with the cellular module - software (D2, D3) or hardware (D0, D1). There is also a 5-pin, 0.1" spaced header with connections for microphone inputs and speaker outputs. Headers are not soldered on, we recommend the 6 and 8-pin stackable headers.

The SM5100B is a miniature, quad-band GSM 850/EGSM 900/DCS 1800/PCS 1900 module, which can be integrated into a great number of wireless projects. You can use this module to accomplish almost anything a normal cell phone can - SMS text messages, GSM/GPRS, TCP/IP, and more!

This module features two UARTS, an SPI interface, and two 10-bit ADCs. It also supports Li-ion battery charging, a 4x6 keypad, and an LCD interface. Inputs/outputs are available for a speaker and microphone. An antenna does come attached to the module.

Power supplied to the module should be regulated between 3.3-4.2VDC (3.6V nominal).

You can connect it up to a mating 60-pin, surface mount connector, or you can pair this module with our SM5100B evaluation board. There is no SIM socket on the actual cell module, you might want to consider using our SIM card breakout board.