This shield connects your Arduino to a cellular GSM Network! It directly plugs onto your Arduino and allows you to send/receive SMS, make/answer calls, access internet through GPRS. The shield includes all hardware required for your Arduino based GSM Project - GSM/GPRS Module, SIM Card Holder, Cellular Antenna, headphone connector, etc. It greatly simplifies your GSM project and allows you to kick start your GSM project using the Arduino. Library to handle SMS, Calls, GPRS, DTMF decoding is available and greatly simplifies your project code.
The shield uses SIM900A Module. AT commands are used to configure and communicate with the shield. All communication with the shield is through serial interface. The shield allows you to use a software serial port on your Arduino.
An onboard 3.5mm Audio Jack allows you to connect a headphone to answer calls.
You may use the shield in the following projects -