Robot unties knotted cables but can't pick them up off the floor

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Robot unties knotted cables but can't pick them up off the floor
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A robot that can untangle the knots in cables with its simple grippers may be a boon around the house or in manufacturing – if it can keep hold of the wires

A robot with a pair of grippers on its arms can untangle long, knotted cables. The technology could be used to fit electrical cables in aircraft or offer household assistance to older people, but at the moment, the robot struggles if it drops something, because it can’t bend down to pick it up again.

able to either firmly seize the cable or hold it loosely to allow movement, in order to slowly unweave the knot. The final task is to slowly pass along the cable from one end to the other and check that all knots have been removed. In experiments with a braided 2.7-metre micro-USB to USB cable, the robot had a success rate of 67 per cent on single, simple knots and 50 per cent on more complex tangles. Some of the failures included the cable falling off the table, from where the robot was unable to retrieve it.

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