US Scientists Create 3D-Printed Robots That Walk—No Electronics Needed!
In a groundbreaking breakthrough in robotics, researchers at the University of California, San Diego, have developed a six-legged walking robot that requires no electronics or complex assembly. This innovative robot is entirely 3D-printed in a single process using flexible materials, and it moves powered solely by compressed air.
The robot is designed to “walk right off the 3D printer” with the simple addition of a compressed gas cartridge. Unlike traditional robots that depend on rigid parts, motors, or circuits, this new design utilises soft materials and an intricate pneumatic oscillating circuit. This circuit controls the robot’s movement by regulating air pressure, coordinating the alternating motion of its six legs with remarkable precision.
Each leg of the robot has four degrees of freedom, allowing it to move up and down as well as forward and backwards. This flexibility enables the robot to walk in a straight line and navigate diverse terrains. Tested both indoors and outdoors, including on sand and turf, the robot has even demonstrated walking underwater.
Costing only about $20 to produce, this robot represents a major leap towards affordable, accessible robotics. Because it contains no electronics, it can operate safely in environments where traditional robots would fail—such as areas with high radiation, magnetic fields, or fire hazards. Its creators envision applications in disaster recovery, scientific reconnaissance in hazardous environments, and even space exploration.
The entire 3D CAD design, including the robot’s “brain” (the oscillating valve), is open source, encouraging educators, researchers, and hobbyists to experiment with and build upon this new technology. This development not only simplifies robotic fabrication but also offers an inspiring educational tool that may pave the way for more sustainable, low-cost, and safe robotic systems of the future.
This innovative robot underscores a new paradigm in robotics—soft, flexible, electronics-free machines produced by desktop 3D printers that are easy to make and powerful in function.
