making a smooth robo hand of open bionics with instructions

 https://openbionicslabs.com/blog/build-your-own-3d-printed-robotic-hand-in-under-an-hour

complete material and instructions are available here

https://www.instructables.com/Ada-Robotic-Hand-Open-Bionics/

this robo hand is open sourced by open bionics and you can print it with 3d printer.

this hand can be controlled with arduino and works very smooth and can handle very fine touches.