I-RUN w/cows

Servo motors: the faster they go the weaker they are... I put 2 motors per leg, it helps keep it fast and strong enough to move itself along. Movement is the smoothest when legs are vertical, but would tip easily when changing directions, so I gave it a 1 sec delay before changing directions, while the legs spread apart slightly, giving it a wider, more stable stance. Similar solution for hills, it detects it is on an uneven surface, reduces speed, and takes a wider stance. When on flat ground it will resume running.