To rotate an axial load LEGO developed the turn table. For light loads this works great but the friction increases dramatically with heavy loads. This thrust ball bearing uses standard LEGO balls to transform the friction into rotations. This allows the two disks to easily rotate. The balls and an additional rim keep the two disks in place.
A motor can be attached on the inside to power the rotation. Even the smallest LEGO motor is sufficient to easily rotate this 2 kg load. This thrust ball bearing is fully LEGO compatible and even allows studs to be attached to top half. Standard 14.2 mm LEGO balls can be used. The bearing measures 20 studs across and is three bricks high. This should be big enough for even the biggest crane or MOC display.
The 3D data is available from the Autodesk Gallery.
We have just published a nice study in which we developed and tested Emotion Rating Figurines (ERF) that allows you to assess emotional responses. The figurines are base on LEGO Minifigures. We developed a questionnaire sheet and also a physical model.Read More
The LEGO Galaxy Explorer is amongst one of the most popular sets of all times. In 1980 LEGO published the Idea Book 6000 that contained an alternative build for the Galaxy Explorer. The building instructions were sketchy at best. I built the Galaxy Explorer 6000 model for the Moonbase 42 at the Christchurch Brick Show 2015 and I also created an LDD file for it. The building instructions are available here. It has been great fun to re-create this spaceship from my childhood. I hope you enjoy it.
We build a new LEGO robot based on the popular LEGO flash lights. We use custom made 3D printed parts to put small servo motors into its head, chest, arms and legs. The robot has six degrees of freedom. In addition we embedded a camera, microphone and speakers into the robot. The robot is controlled through an Arduino micro-controller. We used The Robot Engine to create animations for the robot and to design interactions with users. The paper will be presented at the Ro-Man2015 conference in Kobe.
Here are some useful resources for you if you intend to build a similar robot:
- 3D files for the custom parts
- Building instructions for the robot
- Tutorial for the software setup
- Tutorial extension for the software setup
- The Robot Engine software
The credit for this robot go to:
- Shogo Nishiguchi
- Guillaume Vandenbor
- Marius Soucy
- Kevin Fleuret
- Eduardo B. Sandoval
It is my pleasure to announce that the 2014 LEGO Minifigure Catalog is now available. It contains more than 650 Minifigures with detailed photographs and meta data. The book is a whopping 192 pages. I have limited the distribution options to Amazon and hence was able to reduce the price to only $32 USD. This is the biggest year book so far and I dare to say my best one so far.
I am participating in the National Novel Writing Month of November. It is the first time I write non scientifically and from the few workshops I recently attended here in Christchurch I realize that this will be an interesting experience. I make steady progress but writing 1666 words daily is challenging. Most of all because there are all those other tasks that sneak up on me.Read More