Adding GPS to your Arduino has never been easier. Multiple GPS receivers attach easily to the shield, and with the example sketch (check below), you will be able to locate your exact position within a few meters. GPS also gives you amazingly accurate time!
A connector for the popular EM-406 GPS receiver is populated on the board, and footprints for EM-408 and EB-85A connectors are also made available (connectors are not included and can be found below in the related items). There is also a spot for the UP501 GPS module. The regular GPS pins (RX, TX, PPS, etc.) are also broken out to a 10-pin 0.1" pitch header, and a small protoyping area is also provided.
The DLINE/UART switch switches the GPS module's input/output between Arduino's standard TX/RX pins or any digital pins on the Arduino (default setting uses pins 3 and 2 connected to TX and RX, respectively). The DLINE/UART switch must be set to DLINE in order to upload code through the Arduino IDE.
The shield also includes the footprint for a 12mm coin cell battery holder to provide battery backup to the optional EB-85A GPS module.An ON/OFF switch is included which controls power to the GPS module. Additionally, the Arduino reset switch is also brought out.