ETH Zürich robotic hand walks on its own fingers, no legs or wheels needed
lukas_m_ziegler · x · 2026-09-16
ETH Zürich has built a robotic hand that walks across a surface using its own fingers — no wheels, no bolted-on legs, no separate drive mechanism. The same fingers that grasp also carry the hand's weight, evoking the Thing from the Addams Family.
Key technical insight: quadruped locomotion reward functions quietly assume symmetric legs evenly spaced around a body, but a hand has fingers of unequal length unevenly arranged around a palm plus a mismatched thumb. The team wrote a reward formulation for that unequal geometry, and in simulation it moves faster than tuned rewards borrowed from quadruped work.
Notably, they kept the hand's existing finger design and position controller — not a bespoke demo machine — with power and computation onboard, running untethered.
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