spirit.ocx

• Lego has the spirit.ocx made ready for download: http://mindstorms.lego.com/sdk1/SDK.asp

CAD program for Lego:

• http://www.lm-software.com/mlcad/

Planet simulation:

• http://www.cozmo.dk/planetmaskiner/Lego/

Alternate LEGO Mindstorm RCX operating systems:

• http://brickos.sourceforge.net/

Using .NET on the RCX:

• http://www.dcl.hpi.uni-potsdam.de/services/weblog/

The building of logical gates for lego:

• http://goldfish.ikaruga.co.uk/logic.html

Air compressor and a transmission:

• http://www.sonic.net/~rci/transmission.htm
• http://www.sonic.net/~rci/legocompressor.htm