Releases Ruka-v2, a fully open-source, 13-DOF tendon-driven humanoid hand with wrist and finger abduction buildable for under $1,300.
March 30, 2026
Original Paper
Ruka-v2: Tendon Driven Open-Source Dexterous Hand with Wrist and Abduction for Robot Learning
arXiv · 2603.26660
The Takeaway
It significantly lowers the barrier to entry for dexterous robotic learning, providing hardware capable of human-level tasks like in-hand rotation and calligraphy at a fraction of the cost of commercial alternatives.
From the abstract
Lack of accessible and dexterous robot hardware has been a significant bottleneck to achieving human-level dexterity in robots. Last year, we released Ruka, a fully open-sourced, tendon-driven humanoid hand with 11 degrees of freedom - 2 per finger and 3 at the thumb - buildable for under $1,300. It was one of the first fully open-sourced humanoid hands, and introduced a novel data-driven approach to finger control that captures tendon dynamics within the control system. Despite these contributi