Grasp failure recovery - do current systems even detect a dropped object reliably?

[ethan_fisc]

@jhansen Pretty much this. One thing to add: Palm sensing gets less attention than fingertip sensing, but a lot of power grasps (holding a box, a tool handle) rely more on palm and lateral finger contact than fingertip contact, so under-sensing the palm can leave a real blind spot in grasp confidence. Kind of makes me think about how different this all looked even three years ago.

[johnrossi]

This matches something I went through recently. Tendon-driven fingers let you move the heavier actuators back into the palm or forearm, keeping the fingers themselves light and fast, but they introduce cable routing, tensioning, and long-term wear problems that direct-actuated fingers don't have. Kind of makes me think about how different this all looked even three years ago.

[camila.jackson0]

Respectfully, I think this undersells it a bit. Wet, oily, or otherwise low-friction objects are still a genuine edge case for most current hands, since tactile sensing and grasp-force controllers are typically tuned and validated on dry, higher-friction test objects.

[pierregreen]

To answer this directly: Figure's fourth-generation Dexterous Hand (on Figure 02/03) reportedly offers 16 degrees of freedom per hand with sensors integrated into each finger, aimed at fine force control tasks like handling small electronic components without crushing them. Anyway, good thread - following for more.