A Walking Robot—No Electronics Required. Researchers at the University of California San Diego and BASF have developed a 3D-printed robot that walks using only compressed gas—no electronics needed. Printed in a single go from just one material, this minimalist design proves that robotics doesn't have to be complex or expensive. With a $20 price tag and built using only a standard desktop 3D printer, this breakthrough challenges conventional thinking about mobility and automation. Would you try printing one yourself?