A Single In-line Memory Module (SIMM) is a type of memory module containing Random Access Memory (RAM) which was used in computers from the early 1980s to the late 1990s (think 386, 486, Macintoshs… ...

In the meantime, another add-on that brings 3G and GPS to Raspberry Pi or Arduino is available at Cooking Hacks for €189. There's also a cellular add-on for Arduino for $99.95. Jon Brodkin ...