Rotundus the Spherical Robot Makes PopSci "Best of 2008"

I think it is great that the Rotundus GroundBot (a spherical robot) made the Popular Science "Best of What's New in 2008"; however, I'm a bit perplexed... New Scientist featured the spherical robot all the way back in early 2005; how is it "new" now in 2008?  Either way, this serves as a convenient time to re-examine this novel robot -- one that brings back memories of the old solar-powered, spherical BEAM robots from Solarbotics (it was called a "miniball," and is now discontinued).  Read on for some compelling images and pictures of the Rotundus GroundBot, the spherical robot.

Like I mentioned, spherical robots (that essentially shift their internal weight to provide motive force) are not a new idea.  I recall building BEAM robot kits from Solarbotics quite some time ago that used the same concept, but were quite small, simple, and solar powered.  For example, see the images below (from here). 

Solar Spherical Robot  Solar Spherical Robot   Solar Spherical Robot

However, the Rotundus (featured in both New Scientist and on Roland Piquepaille's blog back in 2005) takes this concept to an all new size scale. Add a camera and some teleoperation, and you have a novel mobility platform. 

Rotundus Spherical Robot   Rotundus Spherical Robot   Rotundus Spherical Robot

From Popular Science:

The GroundBot is a spherical sentry designed to roll up to 6 mph through just about anything—mud, sand, snow and even water. Two gyroscopically steadied wide-angle cameras and a suite of sensors give remote operators a real-time, 360-degree view of the landscape, letting them zoom in on prowlers or detect gas leaks, radioactivity and biohazards. Originally invented by Swedish physicists to explore other planets, the GroundBot features a tough design that requires almost no maintenance and can also be programmed to run autonomously. Its sealed shell protects its interior against grit and allows it to survive steep drops, while a rubber skin dampens vibration and provides traction. To get rolling, the robot simply shifts its weight. Its center of mass is suspended from a pendulum inside the sphere, so motors just push the pendulum to the front, to the back, or to the side. Lithium-ion batteries provide up to 16 hours of spy time

While the Rotundus may be a novel mobility platform, I question its application to harsh environments, especially unstructured ones such as other planets or disaster areas with lots of obstructions, let alone as a "spy robot."  I'm guessing the Rotundus will remain a novelty -- though it would make a very cool toy!

Anyway, I actually think that the older video of the prototype Rotundus traversing snow was much more impressive than the more "recent" video featured on the Popular Science website (both videos are below).



Here are a few more pictures...

Rotundus Shperical Robot  Rotundus Shperical Robot 

Rotundus Shperical Robot   Rotundus Shperical Robot

Oh, and just for fun, here is a video of a LEGO Mindstorms Robot built inside of a 11" plastic ferret ball based off of Rotunudus' design -- you too can make a spherical robot!





Apparently the Rotundus spherical robot has been updated to include the wide-field of view cameras along it's rotating axis (as alluded to by the CAD drawing in the post above) -- check out the image below.


Rotundus Spherical Robot


There is also a new video (below), but I really do not understand the benefits of this robot as a surveillance sentry...


—Travis Deyle
Hahah This is a freakin AWESOME invention. Where can I buy one!! Who made the video Travis you? How far is the remote range on this? So cool...maybe they have smaller versions for sale so i can spy on my wife. Seth owner of Vegas blog

Ultimate Amphibious spherical robot that can move on land and sea.   Inventor: F Mirshekari   • The robot is able to hide under the soil, and only one second out!   • speed and acceleration of the robot allows him to move quickly in all directions!   • The larger the sample, the robot (which I have designed) purely military and capable of a speed of 200 kilometers per hour at sea and land against missiles and other weapons move and is perfectly safe! My robot video links

—farshad mirshekari