I’ve just completed moving most of my RCX creations to this new blog. Most of them being over 5 years old, they’re not really the same style as my present work, but I thought it would be nice to keep this content available to bring back old memories… Check it out here. I’ve kept the...

The RCX robotics set has many so-called studded pieces: bricks with the well known LEGO studs on top. The NXT uses primarily studless pieces: beams and connectors without studs. Both type of pieces have their advantages, but building with these different pieces requires different building skills. Before migrating to the NXT system, I decided to...

Second in the series of brick sorters is this machine, which sorts black, grey and white bricks and seperates big from small bricks. Bricks are thrown into the brick store, go down to the conveyor belt one by one, and are put into one out of six bins on a rotating platform. Each time I...

These remote control designs can be used for RCX remote communication. One design resembles a ‘steering wheel’, while the other looks more like a common joystick. Click to download the joystick source code and the steering wheel source code.

This robot turned out to be the first in a series of climbing robots. The primary function is simple: climb straight up between two vertical walls. Pretty boring, but amusing enough to get 600,000 Youtube views. I created it as part of a “community Contest” in the legacy RCX MINDSTORMS forums. The goal was to...

This car is a combination of the RIS 2.0 set with several parts of the #8421 crane set. The back wheels are driven by one motor, which also makes an ‘engine’ run. A motor in the front allows for steering using a rack-and-pinion steering mechanism. A touch sensor in the front detects a bumper press...

This is just a fun little model designed to try out some gearing functionality. It couldn’t turn very well due to it’s tyre construction, and the lifting mechanism resolves this problem. It features the Lego Speed Computer as a rotation sensor. This vehicle was designed in November 2006.

This railway crossing lowers the barriers when the light sensor detects that a train is approaching. After that, the bridge is raised, allowing the train to move along. The reverse occurs after a given amount of time — when the train has passed by. This construction was designed in May 2006.

A robot that sorts LEGO bricks is possibly one of the most popular MINDSTORMS projects. They’re interesting to build and to watch when they’re sorting bricks! This is the first working brick sorter that I designed, and it was inspired by ” brick sorter 3” by fellow brick sorter builder Philo. This robot was designed...

MINDSTORMS Walkers come in all sizes and leg counts, and this one is my first attempt at creating one. Whether it’s really walking is debatable, but it’s moving, and not on wheels! The two ‘leg modules’ are identical and shown below. In the video, I’m using the RCX remote control to simply power motors A...