3D printed robotic gripper doesn't need electronics to function

https://techxplore.com/news/2023-07-3d-robotic-gripper-doesnt-electronics.html

"can pick up, hold, and release objects... series of valves allow gripper grip on contact and release... turn gripper horizontally triggers valves' airflow change making gripper's 2 fingers release... industrial manufacturing applications, food production handling fruits and vegetables... untethered, only power source bottle of high pressure gas... printing thin walls down to 0.5 mm... Eulerian path... print functional pneumatic soft robots with embedded control circuits"