Yellow-eyed penguin made with LEGO

Converting a 3D STL file to a LEGO model.

It has been some time since I designed this large scale model of a Yellow-Eyed Penguin for the Pop-Up Penguin exhibition. The model is 168cm tall and consist of approximately 60,000 LEGO bricks.

The organiser of the exhibition sent me the STL file of their fibre-glass penguin. I then used the brickplicator software to convert the 3D STL model into a LEGO 3D model that can be build. Since this was a very large model, Gerrit helped me a bit with the conversion. I then imported the model into and rendered the model.

This does seem like a good workflow to convert existing 3D models of animals or any organic form, to LEGO models.


New Podcast Episode: The Sad Robot

Do robots need emotions?

A new episode of the Human-Robot Interaction Podcast is available:

The Sad Robot

What roles do emotions, affect and moods play for humans and robots? We will discuss how robots can sense, reason and express emotions. Furthermore, we talk about if emotions make robots more human. I had the pleasure to talk with Rosalind Picard (MIT), Lola Canamero (CY Cergy Paris University), Hiroshi Ishiguro (Osaka University) and Douglas Campbell (University of Canterbury) about these exciting questions.

5th Edition of the Unofficial LEGO Color Guide

I am happy to announce that the fifth edition of the The Unofficial LEGO Color Guide is now available. The book is available as a paperback and hardcover from An eBook (PDF) is available from Lulu.

An important update happened behind the scenes. In the past I exported the color database to Adobe InDesign and then create the catalog from there. This process was complicated, labour intensive and error prone. The database has now been changed to create the catalog pages directly. Unfortunately, not all the design tricks possible with InDesign can be replicated with the database. The visual design was therefore modernised and extended.

New Podcast Episode: The Story Of Boston Dynamics

From military robots to beer commercials.

A new episode of the Human-Robot Interaction Podcast is available:

The Story Of Boston Dynamics

Boston Dynamics is the rock star of robotics. It recently featured in a beer commercial during the Super Bowl. How did a company that started as a military contractor become a novelty in beer commercials? Dwain Allan and Christoph Bartneck discuss the past, present and future of the company with Robert Cheek and Stephen Hickson.