Page 341 - Robots Androids and Animatrons : 12 Incredible Projects You Can Build

16.26 Close-up of air muscle, rubber band, and finger pull tied
together in finished hand

320

16.27 Finished robotic hand

The thumb in this prototype is articulated (moves) but is not
opposable. To improve this design, make the thumb opposable.
This will increase the effectiveness of the hand. To make the thumb
opposable, the thumb-containing portion of the hand must be cut
off and reattached using a spring-loaded hinge (see Fig. 16.28).
The spring-loaded hinge would be located on the rectangular box
shown in Fig. 16.28. An air muscle connects to this section; when
activated, it pulls the thumb into the palm section of the hand.
This makes the thumb opposable as well as articulated.

Team LRN
Chapter sixteen