The most difficult type of robot to design and build is a humanoid or android (unless you use very large feet). The Honda Motor Company in Japan started research on biped (two footed) walking in 1986 producing the famous prototypes P1, P2, P3 and now Asimo. The latest, July 2005, Asimo (so far only seen in Japan) can run, momentarily lifting both feet off the ground on each step. Honda are continuing their research and consider that in 15 to 20 years time they will have added sufficient intelligence to the robot to enable it to learn from its environment. Continue reading →