Hand: open-source Robot Hand (github.com)

Article summary

The article presents the Amazing Hand, an open-source robotic hand designed to be affordable and expressive, with 8 degrees of freedom and 3D printable parts. The hand is designed to be used with the Reachy2 robot, but can be adapted to other robots. The project aims to explore humanoid hand possibilities with moderate cost. The hand is controlled by small servos and can be programmed using Python or Arduino.

Main themes

• robotic hands
• humanoid robotics
• robot design
• tendons and actuators
• force sensing and proprioception
• mimicking human motion
• alternative designs
• materials and manufacturing

What commenters say

• Some commenters question whether a human-like hand is the best design for a robot, suggesting alternative designs could be more optimal for specific tasks.
• Others argue that a human-like hand is versatile and suitable for interacting with human-designed objects and environments.
• The use of tendons in robotic hands is discussed, with some commenters highlighting the challenges of calibration and wear and tear, while others suggest using encoder patterns or external cameras to track tendon movement.
• There is debate about the importance of force sensing and proprioception in robotic hands, with some arguing that force sensing is more useful for grasping, while others emphasize the need for proprioception to control the hand's movement.
• Some commenters suggest that building robots that mimic human limbs may not always be the best approach, and that alternative designs could be more efficient and effective.
• Others argue that mimicking human motion can be a powerful way to pretrain robots for tasks, and that human-like hands are useful for interacting with human-designed objects.
• The potential for using different materials, such as dyneema tendons, is discussed, with some commenters highlighting the benefits of reduced weight and increased strength.
• The question of how much weight the robotic hand can lift is raised, with some commenters speculating about the changes that would be required to increase the hand's lifting capacity.