Balancing cube looks more like a star

This art-meets-robot has the grueling task of standing on one foot all day long while other robots get to bend to their heart’s content. It balances on that single point by adjusting its center of gravity with six pendulum-like appendages. To make the system more like the Borg, each of those six modules shares sensor data with the rest and work together to keep the unit upright. Give in to loving the design because resistance is futile.

[Via BotJunkie]


  1. osgeld says:


  2. PacoBell says:

    Interesting, but wouldn’t a gyroscope (or several) be a more elegant (and possibly more robust) solution to this engineering problem?

  3. Brian Andersen says:

    What ? No spinning standing on one corner.

    Still a cool hack though !

  4. SheeEttin says:

    Now attach a pencil to the tip and make it graph its movements. That’d be interesting.

    Also, how long until it finds the perfect balance? :D
    (I’m kidding, of course.)

  5. Justin says:

    I would love to have that displayed in my house (when I buy one.) VERY cool

    If only the future held self-balancing buildings like this ;-)

  6. Steve says:

    Solid looking good stuff. Yey!

  7. ohmsresistance says:

    @ justin

    my first thought was buildings, too.

  8. Sam says:

    Wow, great control loop design. When he pushes it, it returns to center with no overshoot. That’s difficult to achieve without serious work.

  9. gyppo says:

    @ Sam
    Not that difficult, PID controllers don’t need that much tuning to get the overshoot small enough for you not to be able to see it from ~2m away…
    But yes, this is pretty cool.

  10. PocketBrain says:

    I want to see it remember what edge/corner it was balancing on and try to right itself after somebody knocks it over.

  11. fastjunk says:

    Best. Title. Ever.

  12. david says:

    lol the title is epic agreed

    they have to make little toys like this, like a rubik’s cube that can stand on one point, it would freak people out i want one!

  13. yo9gjx says:

    nice but i think a gyroscope will be more eficient

  14. mjrippe says:

    What, no trolls? Careful, could be a trap!

    Seriously though, this is truly impressive. This thing looks more stable than most humans I know standing on one foot!

  15. virgoss says:

    meraviglioso! :)

  16. jme says:

    very impressive!
    This would be a very interesting and ideal application to program with a neural network too

  17. strider_mt2k says:

    My ghod, it’s full of…of like…balance or something.

  18. James says:

    It does actually overshoot a little, as you’d expect, but it is impressive control.

  19. M4CGYV3R says:

    It would be cool if you pushed it from point to edge and it kept right on balancing…

  20. nachowarrior says:

    but can you spin it?!

  21. djrussell says:

    if the corners were roller bearings instead, i wonder if you could push it harder. it looks like it would handle a horizontal push fine but not so much an applied moment.

  22. yobyfed says:

    But I just invented a sphere that balances on any side.

  23. mehmet says:

    this is weird.

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