The new LEGO CITY yellow mobile construction crane set 60409 has just been released, and I rushed to download and analyze the instructions. It features new elements that make it possible to build a large and sturdy linear actuator. It's a LEGO Technic set in disguise. That inspired me to invent a biped walker with estensibile legs, that can be controlled with an XBOX controller. Stay tuned for more LEGO ROBOTICS!
