Our SDRamps add-on module allows you to print directly from a micro SD card.  You would still use your computer to start the print, but once started you can disconnect your computer and the 3D printer will continue to print.  The micro SD card would hold your gcode files and be drip fed to 3D printer automatically.  This add-on is compatible with the Asteid 1000S, Asterid 1000HB, Asterid 2000, and Asteid 2100 3D printers.