The UltiController features an SD card slot, 4 line LCD display and a click-rotary encoder, allowing you to seamlessly control your Ultimaker (fastest, high-detail, open source 3D printer), even without a computer attached. Besides monitoring your print progress, you can adjust print settings on the fly. This means you decide the quality vs. speed ratio after you've sliced the files, instead of having to reslice or wait for your print to finish.A movie of the announcement of availability + assembly: http://www.youtube.com/watch?v=IHXWTy8pXZ4The bill of materials is included as an XLS file.Assembly instructions are found here: http://wiki.ultimaker.com/UltiController_v1The UltiController plugs right into the Ultimaker electronics (from version 1.5.6). Users of 1.5.4 can also upgrade to use the UltiController without spending money, by soldering one wire. Please see the instructions in the wiki mentioned above.The Ultimaker electronics are found here: http://www.thingiverse.com/thing:26768To get yours, go to https://shop.ultimaker.com/en/parts-and-upgrades/