earthworm

2 Articles

Robotic Worm Uses NinjaFlex Filament

September 24, 2020 by 8 Comments

If you think about building a moving machine, you probably will consider wheels or tracks or maybe even a prop to take you airborne. When [nwlauer] found an earthworm in the garden, it inspired a 3D-printed robot that employs peristaltic motion. You can see a video of it moving, below.

The robot uses pneumatics and soft plastic, and is apparently waterproof. Your printer’s feed path has to be pretty rigid to support flexible filament without jamming. There’s also some PVA filament and silicone tubing involved.

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Earthworm Robot Does What Earthworms Do

August 12, 2012 by 16 Comments

This earthworm robot comes to us from researchers at the Massachusetts Institute of Technology. It is made up of mostly soft parts and manages to inch its way along the ground.

The robot’s “skin” is made from a tube of polymer mesh that will hold up to an awful lot of bending and stretching. As with its biological namesake, locomotion is facilitated by circular muscles. In this case muscle wire, when stimulated with electricity, contracts around the mesh casing. By coordinating these contractions the robot is able to inch its way along.

But it’s not just the method of travel that makes this research project interesting. The bot is also extremely resistant to damage. The video after the break shows the device withstanding several whacks from a mallet and being stepped on by the team that created it.

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