Kits and bare PCB exist. Sources are free. There are two firmware branches. One in C and one in Pascal. Visualization and control software fo PC is also available in two versions. One in LabView and one in Java.
Here it is in german:
http://www.heise.de/ct/projekte/machmit/ctlab/wiki/WikiStart
or with online translation to english:
http://66.196.80.202/babelfish/t...