Thingiverse member Artharis posted up plans to create a 3D printed animatronic tail that is controlled by an Arduino. Using open source OpenSCAD software, you can specify how many vertebrae you would like, and the software will spit out the .stl files for your 3D printer. In the video Artharis uses 10 vertebrae, plus the tip of the tail.
Now, we just need someone to make eight of these, power the servos with the Adafruit servo controller, and squeeze the whole thing in a octopus stuffed animal.
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