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The Big Design Change

Tesla has just released the Optimus V3 hand patent, revealing a major redesign. All 25 actuators have been moved into the forearm instead of the hand itself. This makes the hand much lighter, more human-like, and significantly faster.

How the Tendon-Driven System Works

The hand uses a sophisticated tendon-driven system with three thin, flexible control cables per finger. These cables run from the forearm actuators, through a cleverly designed wrist joint, and into the fingers. Each finger has four degrees of freedom, and the wrist adds two more.

Smart Cable Routing at the Wrist

The patent shows an intelligent cable routing solution at the wrist. The cables switch from a horizontal stack on the forearm side to a vertical stack on the hand side. This clever transition greatly reduces friction, stretch, and interference when the wrist bends or twists.

Why This Matters

This design is a huge step toward a truly practical humanoid robot capable of performing delicate, human-like tasks with a lightweight and dexterous hand.

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FAQ

What is the main innovation in Tesla’s Optimus V3 hand patent?

The key innovation is moving all 25 actuators into the forearm and using a lightweight tendon-driven cable system to control the hand.

How many degrees of freedom does the Optimus V3 hand have?

Each finger has four degrees of freedom, and the wrist adds two more, for a total of approximately 22 degrees of freedom per hand.

Why did Tesla move the actuators to the forearm?

Placing the heavy actuators in the forearm makes the hand much lighter, faster, and more human-like while still delivering strong grip strength.

What makes the V3 wrist design special?

The cables change from a horizontal stack on the forearm side to a vertical stack on the hand side, which greatly reduces friction and cable interference during wrist movements.

When will we see Optimus V3 with this new hand?

Tesla has not given an exact date, but these patents suggest V3 could be revealed later in 2026.