Shown here is a later-stage prototype in engineer and hobby roboticist Xander Soldaat’s development of a Lego holonomic drive platform using native Lego system components for the omnidirectional wheels. Some pretty cool third-party Lego-compatible omniwheels are available, but I appreciate Lego-system purism as much as the next AFoL. I chose this photo because it shows off the omniwheel cluster design. Click through to Xander’s blog to see the final version of his Kiwi drive rollerbot.

Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.