Software to create building instructions

[h4l0]

What software can I use to create instructions for building NXT robots?

Thanks

h4l0

[mightor]

The easiest to use is Lego Digital Designer, which you can download from http://ldd.lego.com
There is also MLCad (http://mlcad.lm-software.com/e_default.htm), which I am not familiar with but is very popular with more advanced builders.

There are some others, too but perhaps someone else can chime in here.

- Xander

[mattallen37]

LDraw (includes MLCcad) is really great for creating a digital form of a lego design, but I haven't personally tried making building instructions using it. I have made several of my designs into digital representations using it. It takes a while to "build", but it's really great to use, and fairly easy.

[haydenstudios]

I primarily use MLCAD for building. You CAN use it to generate building instructions, but LPub which comes packaged with MLCAD if you download the all-in-one-installer has many more options, and can generate instructions that are about as good of quality as those distributed by LEGO.

[inxt-generation]

I primarily use MLCAD for building. You CAN use it to generate building instructions, but LPub which comes packaged with MLCAD if you download the all-in-one-installer has many more options, and can generate instructions that are about as good of quality as those distributed by LEGO.

http://dl.dropbox.com/u/36991906/COLLID ... ctions.pdf One of my smaller models, made in MLCAD with instructions made in LPUB. It's actually quite easy to do this if you know how it works. This is my first custom instructions made this way. It may take a while to do (sometimes. Took me about 4 days) but I think it's well worth the effort.

[spillerrec]

To clarify there are several programs involved when using the fan-made solutions.
First part is LDRAW which is a library of 3D models of LEGO bricks. Nearly all programs uses this library. (LDD is the only that doesn't as far as I know.)
MLCAD is a program that allows you to create and edit 3D models of your LEGO creations, using the LDRAW parts library. You also use it to specify each step in the instructions and the viewing angle of each step. There are other programs to do the same, for example SR 3D Builder and those can be used interchangeable as they store the models using the LDRAW standard.
LPub is a program specifically made to make it easier to create better looking building instructions. It takes a model file made in MLCAD or similar, uses the instructions steps specified there and controls several other programs, such as exporters and renders, to make the process less painful.

MLCAD was the primary editor a few years ago, but it seems like a few alternatives have come lately. Sadly I have not really been up-to-date on this matter, so I can't give give any recommendations. All I can say is that MLCAD isn't developed anymore (source is not available either) and it is not too great for Technics. (Studs and axles often doesn't properly align for example, and getting an exact angle on a gear or similar can be nearly impossible.)

EDIT:
Some of my building instructions:
An older BI of mine of a medium sized Mindstorm robot: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=3225909
Made in MLCAD + LPub using Pow-ray as render, images where combined manually in Gimp. This was 4 years ago and LPub has changed significantly since then.

A small Technic model made much more recently: http://www.brickshelf.com/gallery/Spill ... ission.pdf
MLCAD + LPub used here, but everything for the instructions where done directly in a new version of LPub. Can't say that I'm happy with the result, but it was much easier and faster to make.