a single Arduino shield that combines GPS tracking with a GSM and GPRS transceiver. There’s also an SD card thrown in for good measure, making this one of the best tracking and data logging ...

A few days ago, one of [Severin]’s SD cards died ... contained on the card. The second iterated over the file system and output all the files in hex over the serial port. With a bit of Python ...

In addition to Ethernet connectivity via the Arduino Ethernet 2 library, the shield includes a microSD card slot with the ability to read and write to a microSD card using the Arduino SD library.

Whether you like Arduino or not ... 450W power The GSM Shield also includes a Telefonica SIM card that includes a worldwide data tariff which can be used anywhere there is a cellular signal.