Sparkfun GPS-13750 GPS module 1 pc(s) Compatible with (development kits): Arduino

The Sparkfun GPS Logger Shield equips your Arduino with access to a GPS module, a µSD memory card slot and all the other peripherals you need to turn your Arduino into position tracking, speed monitoring and height-monitoring miracle logger. The sign is based on a GP3906-TLP GPS module - a 66-channel GPS receiver with a MediaTek MT3339 architecture and an update rate of up to 10 Hz. The GPS module streams constant position updates through a simple TTL-level serial interface, which you can then log on to a µSD card and/or use for other purposes.
Everything on the label is highly configurable: A switch allows you to select the UART interface of the GPS module between hardware and software ports, the µSD card works through a hardware SPI port that should be compatible with most Arduino layouts, and additional prototyping space should allow you to add the last few components you need to complete your project. The main power supply of the GPS Logger Shield is provided via the Arduino 5V pin strip. This voltage is reduced to 3.3V, which is fed to both the GPS module and the µSD card. These two components should consume about 30mA on average, but they can very rarely rise to about 100mA. We also strongly recommend a 12mm Coin Cell battery, which fits in the battery holder of the GPS Shield.

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