Books

10 Cool Lego Mindstorms Ultimate Builders Projects

Having participated in the creation of this book, I have to admit some bias to the review. 10 Cool Lego Mindstorms Ultimate Builders Projects contains 10 original Lego Mindstorms creations.  The model I submitted is DominoBot. It was a great challenge to build and create the building instructions for this model.  The book contains step-by-step instructions on how to build each of the 10 robots.  The book should challenge the intermediate enthusiast and contains...
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Other

Chameleon 1.1 / MapServer JavaScript Dynamic Tree Legend Widget

A while back, I was given a challenge to integrate a dynamic JavaScript-based legend into Chameleon  The following information is my take on creating a Widget for use in a MapServer / Chameleon implementation.  If you are not sure what Chameleon and MapServer are, then the following info may be of little use to you.  To learn about these online mapping tools, you can find more at the DM Solutions – MapTools...
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DYI, Mods, Hacks & Stuff

LEGO X50/X50v Cradle

I am an AFOL (Adult Fan of Lego) and specialize in building and programming Lego robots (look at the rest of this site for more of my robots). I use (or play) with Lego Technic / Mindstorms for the most part. I got an idea to see what I could come up with for a cradle for my Axim. Below is my first run at a Lego Dell Axim X50 / X50v cradle. It...
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Autonomous

Walker

I managed to re-work an old design. By using 2 motors and drive mechanisms, I was able to get the walker to steer. The key to steering is the syncro mechanism that I setup. It uses 2 touch sensors – 1 on each of the left and right center drive legs. Using NQC, the code will monitor the timing of the rotations. It goes something like this: When sensor #1 is triggered – is...
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Autonomous

Johnny 5

Johnny5 was built more as a test to see how similar I could build him out of lego.  Programming on Johnny5 was simply line following with object avoidance via touch sensors at the front. His hands and head would also move in a pre-defined pattern.  The pneumatics are there for visual effects.  They serve no function on this model. Rate This Post:
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LEGO Robots

DTM

This is my LEGO ??dpi (25 I think) DTM scanner. The DTM works via a combination of RCX-based code done in NQC / RCXCC, and a program made in Visual Basic (5). RCX – The RCX is responsible for scanning a line, and populating its datalog with pixel values and then sending a signal for the PC to upload this data. The RCX then waits for the PC to send a signal back to...
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Autonomous

MarbleMiser I

Marble Miser was designed to meet the challenge of the 4th Annual Lego Robotics Competition / Get together at U of T in Toronto Ontario. Many thanks to Calum and the boys for putting this together.  It was the first event that I was able to attend, and it was a great time.  The turnout yielded many more entrants than initially expected. To find out more about the event, visit RTL Toronto Website. Now...
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Autonomous

DominoBot

It had been a few months since I built my last robot (Climber). During the early summer of 2002, I received an email from Syngress. They had indicated that they were going to create a series of “10 Cool Lego Mindstorms Robots….” books, and invited me to produce a model for one of them. For some time I had the idea of building a robot that could mimic the activity of laying down dominos...
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