The Hexapod walking robot below is a Lego NXT with 6 legs.
The legs are controlled by motors on the right and on the left. The motor on the back controls the middle legs and assists in tilting it to the left or to the right.
Operation example: the left-center drops, the left-side legs go up and th
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/walking-hexapod-lego