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At the Center for Biorobotics in Estonia, Eszter Ozsvald built a mechanical fish named A.riel that can model the movements of actual fish surprisingly well while using only one servo inside a carefully made silicon-based mold. It took many iterations before her final product emerged, but found that in the end she could develop the same vortex patterns as actual fish. Her site has extensive documentation of the build process.

ariel221 Robotic Fish Uses only One Servo


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