Mechanical Design :

In this assignment I designed the rotation axis of each finger, I made two designs, the first one was a bar that connected tu parts of the finger, each finger has three parts and for the rotation of the finger I used a filament, it is connected to the final part of the finger and pass through a hold made in the center of each part(three pieces for finger).The movement was 90 degree for each part of the finger and an independet movement what it means that it was not a similar human movement hand. Check the figures below

The second design was more realistic refer to human movement hand, and for that design I used pulley with a elastic band, and I got this movement, check the figure below.

The real design, pulley adapted to a piece of the finger: Two pieces and a pulley