DARPA's ARM program's hand has fingers which can survive a strike with a baseball bat
DARPA's ARM program's hand can pick up a key off a smooth surface (see next image)
...it inserts a key into a locked door and turns it (see next image)
...then opens the unlocked door
DARPA's ARM program hand picks up and operates a power tool
DARPA's ARM program hand is flexible enough to pick up a basketball...
...yet precise enough to lift a screw off a smooth surface
DARPA's ARM program hand can even lift a card off a table
DARPA's ARM program hand can lift 50 pounds / 22 kg (assisted by a human, since the actual robot is incomplete)
DARPA's ARM program hand easily holds onto a battery
Back when DARPA first announced its Autonomous Robotic Manipulation (ARM) program in 2010, the average cost of a military-grade robot hand was around US$50,000. That's expensive even by the US military's standards – especially for something that is bound to be in close contact with explosives – which is why the hardware team of the ARM program tasked participants with developing a reliable low-cost hand. Now, thanks to work by iRobot (yes, the company that makes the Roomba robotic vacuum) and researchers at Harvard and Yale, the ARM program has a surprisingly effective new hand to play with that costs just $3,000 (in batches of 1,000 or more).
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