This is a LEGO version of the popular Hoberman Sphere toy.
Although the sphere is pretty stable, it can’t really take the repeated abuse of being handled by the public at a show. I built the spinner so that I didn’t have to hang around and open and close it myself, or keep putting it back together.
Update 10/18/2016: Instructions for building the stand are now available here.
It works really well when connected to a programmable controller to repeatedly start and stop it.
These puzzles make use of a technique of meshing LEGO panel pieces together. The instructions provided are for a basic square version but the technique can be extended to build puzzles of any size. The complexity can also be varied by changing the number of separate puzzle pieces, as pictured below.
This technique could also be used to create patterns that represent interlocking bricks or tiles in other models.
Note that this only works with the older version of these panel pieces.
While building my Micro Steam Engine I started to think about how I would display it. I initially planned to build a set of train tracks to put it on, but the the project quickly grew into this entire farm layout, complete with crop circles and aliens abducting cattle.
I’ve always thought that the LEGO Technic Competition Cannon looked like the boiler for a steam engine. I finally took the time to make it happen and this is the result.
There are quite a few friction based connections, but they are all pretty solid with the original version of the cannon. Unfortunately LEGO has since redesigned the mold for this piece, and although the connections still work, the main wheels are quite loose and there are some odd looking gaps in a couple of places.
This is a 1:57 scale LEGO model of the O-Train, a light passenger train (Bombardier Talent BR643 DMU) that provides commuter service to the city of Ottawa.
I built this model for ParLUGment‘s Ottawa themed Winterlude 2005 train layout. I developed a new technique for close coupling the cars using shared bogies. It uses an elastic to keep the cars together while the train is straight, but allows them to separate when it is traveling around a corner. This technique is illustrated in the photos below.
A mosaic of the LEGO logo creating using LEGO flowers. The mosaic itself measures 24 by 24 studs, requiring 576 flowers – 282 red 50 yellow, 63 white and 181 black. Since LEGO does not currently make black flowers, I did have to pain 181 blue flowers black.
Inspired by the motorized cows created by Erik Amzallag, which can be seen in his Brickshelf gallery. I loved these so much that I planned to build a pair, using the instructions he provided, for one of ParLUGment‘s train layouts.
Unfortunately they turned out to be a little too large for my needs – but I was determined to get this amazing idea working with cows more to scale with the standard LEGO minifig. The first step was to design a minifig scale brick built cow.
The next step was to get their heads to turn. Since these cows are too small to contain a micro motor, the micro motor needed to be placed ‘underground’. I built the cattle onto a 2 brick high ‘hill’.
The cows in the video below are controlled using a Mindstorms RCX and triggered with a light sensor that detects when the train passes. Except for some changes to motor power and timing, the program used to control these cows is essentially the same as the one Erik provides in his Brickshelf gallery.