17-Year-Old Built a Mind-Controlled Robotic Arm Using AI and 3D Printing A teenager has demonstrated how accessible technology is reshaping innovation by building a mind-controlled robotic arm using artificial intelligence, low-cost electronics, and 3D printing—at a cost of around $300. The system uses brain-signal sensors to interpret basic neural commands, allowing the robotic arm to move and grip objects. While still experimental, the project showcases how assistive technology could become fa