An Arduino on the build queries a GPS module and selects the audio file from an MP3 playback module. This isn’t uncommon, and a lot of large outdoor museums (think battlefields) have similar setups.

The NeoGeo watch is created using FLORA the Arduino wearable programmable board and its GPS module to tell the time using a ring of pixels ...

The extendable Arduino GPS data logger consists of a shield that is fitted with the GPS receiver, SD card reader, and accelerometer, together with an Arduino UNO board. This combination of ...

The GPS module itself can be set to update at anywhere from 1 to 10 Hz, and [Wayne] says that the I 2 C bus blows away the oft-used 9600 baud serial interface.