Robot arm that can paint and play badminton built by Canadian university

Researchers from Université de Sherbrooke in Canada have created a robot arm that can be used by humans which has the dexterity to pick fruit. The type of arm developed is called a supernumerary robotic arm, in that it does not supplement any existing human limb but adds an extra one to the body. The arm has three degrees of freedom and is controlled by a hydraulic system connected to the user through a tether and controlled by another human being. According to IEEE Spectrum, the arm weighs little over four kilograms, approximately the same as a human arm, although most of that weight comes from its external power source which has to be attached to the arm at all times. In terms of power, the arm can lift a five kilogram weight, meaning that it could be used for a number of tasks including painting walls, washing windows, handing tools to a human worker, or even playing badminton.