Walking Works!

Although the majority of robots built by amateurs move around using wheels or caterpillar tracks, two categories occupy a place apart because of the spectacular way they move: the hexapod robot, also called spider robot (though spiders actually have eight legs!), and the walking robot. It may seem relatively easy to make the wheels turn using motors, which is the sole requirement in a conventional mobile robot, but reproducing walking, be it of an insect in a hexapod or of a human in a walking robot, might appear markedly more difficult...