Aero Hand Open: low-cost, open-source, lightweight, anthropomorphic dexterous hand

TetherIA team

Abstract

Aero Hand Open is a low-cost, open-source, lightweight (< 400 grams), anthropomorphic robotic hand designed and developed by TetherIA for affordable dexterous manipulation research. At just $314, it provides a capable alternative to expensive proprietary solutions while maintaining high performance through innovative tendon actuation.

See Aero Hand Open in action: effortlessly picking up an iPhone from a flat surface, grasping tiny M5 screws, pulling a drill trigger, opening a soda can, and accomplishing much more with precision and dexterity.

Tendon-Driven Architecture

Aero Hand Open employs a tendon-driven actuation architecture in which each motor distributes force through low-friction cable pathways to multiple joints, delivering coordinated motion without increasing actuator count.

This shared tendon routing keeps the hand under < 400 grams, while the compliant cable runs absorb impact energy to cushion interactions with objects and users.

Key Characteristics

16 Degrees of Freedom

7 powered joints pair with nine passive couplers to recreate natural hand synergies.

Dexterous Thumb

3 active thumb DoFs deliver opposition, pinch, and in-hand reorientation capabilities.

100% Backdrivable

Cable routing and low gearing make the hand fully backdrivable for safe, responsive control.

Multi-Modal Control

Supports position control, torque control, and inline tendon force sensing for adaptive manipulation.

Hand Payload, stronger than it looks.

The active load torque is 10 N per fingertip, sufficient to pull drill trigger and many other everyday objects.

The hand lifted a full 5-gallon water jug very easily (~18 kg)!

Finger Speed - Catching a Flying Tennis Ball

Catching a Flying Tennis Ball

Range of Motion

Range of Motion Demo