An American student has developed a robotic arm controlled by the power of thought

17-year-old student from the US state of Virginia, Benjamin Choi, has developed a robotic arm with artificial intelligence, controlled by the power of thought. The teenager printed the details of the prosthesis on a 3D printer and connected them using bolts and rubber bands. It took about 30 hours to produce the components. A special helmet picks up brain waves and feeds them into an algorithm that controls the mechanized arm. The signal recognition accuracy is 95%, the developer claims.