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This is the first of my robots that was built using the LEGO Mindstorms kit (cool kit by the way).

The robot is able to walk on 4 legs kinda like using a walker (like the kind you see little old ladies using).  The robot moves all 4 legs at the same time to lift itself up, then moves its body forward and the places its body back down again.   The two frontal antennae allow the robot to steer around obstacles.   The eyes here are just for show and do not have any functionality.   I've included a pile of pictures here: