A movie of the device where the four arms made of Lego are synchronized and rotated around the topic on Twitter



A device with 4 arms shows a movement without disturbing the inside of a rail like "rice" made of Lego parts and a movie that circulates around the circle is posted on Twitter and it seems that it moves too smoothly "It feels good" and is becoming popular.


This movie was posted by KIM Nori ( @ HanueNori ) who belongs to Tokyo Tech Lego Council. On the rails of this shape made of parts of " LEGO TECHNIC " ......



Dock an octopus-like device with 4 arms. The orange part is supposed to slide inside the rail and move.



When moving the device with your finger, the device rotated while drawing a beautiful circle while the orange part was moving through the rail with undisturbed movement. While the movement looked very mechanical, the final shape drawn by it was a work that felt the geometric beauty of "circle".



This seems to be a member of a mechanism called "elliptical compass". In the elliptic compass, if you insert a slider in two rails that cross 90 degrees and move the slider with a single lever, the tip of the lever draws an ellipse. You can see the movement as you watch the following movie.

It is amazing! The mechanism of surprise (4) "Elliptical compass" To free study of summer vacation! - YouTube


Mr. Kim gave a movie of the device which increased the number of rails and made 12 more.

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in Hardware,   Video, Posted by darkhorse_log