We just wanted to let you know that SparkFun will be closed onin observance of the Christmas holiday. A DOS freeware program written by James Jessiman for modeling Lego models inD on computer. LeJOS NXJ for Windows, Linux, and Mac OS X: Download the file for your OS from Sourceforge. This is a list of file formats used by computers, organized by type. MonoBrick dk is a site about programming LEGO Mindstorms It is the home of both MonoBrick communication library and the MonoBrick EV3 firmware. Einfach auf das entsprechende Gert klicken.Since the launch of LEGO MINDSTORMS in 1998, three generations of MINDSTORMS products have been on the market: 1998: LEGO MINDSTORMSRCX) : LEGO MINDSTORMS NXT. LeJOS is a Java based replacement firmware for the Lego Mindstorms RCX microcontroller and NXJ is a Java based replacement firmware for the Lego. LeJOS NXJ tar gz: Archive for. This article provides instructions for installing the necessary drivers to use the RCX USB tower with ROBOLAB for LabVIEW.