Unpowered Walkers and Hoppers

These clever devices, created by Peter Steinkamp, explore gravity-powered step-by-step locomotion.

There are eight videos on his site, showing a variety of inventive models that use this form of movement.

One of the creator's future goals is to incorporate what was learned from these working models into a passive bipedal robot.

Check out these fascinating gravity-powered walkers and hoppers.