Part of a series of exercises, the animation of a fragmented Cube is an introduction to Kinetic Design. It explores basic hinges, arms, strings and leveraging their positions to control the movement.
IND-515-01 Kinetic Design Pratt Institute, Fall 2011
This was a final exercise for the Kinetics Design class that began with the creation of five different movement sketches and then selecting one to continue.
The first four reminded me of robotic parts but the fifth one showed a huge range of motion. Here's a movie of how it moved.
Affixing one end of the model to a base, restraining one side with elastic cord and attaching a pulling string on the other produced a movement that reminded me of a finger bending but in a different scale could be a very polite person bowing. This was a very pleasing movement.
Slightly larger, shaped like a triangle where each segment had individual elastic cord attached to the base. Since the piece with the least resistance would bend first, the movement started from the top.
This model features one continuous pull string running down the front side and up the back. This produced a jerky movement as the string had much more friction to overcome.
The final prototype was made with basswood, steel wire, springs and a LED kit from SparkFun electronics. The LEDs were prone to overheating so I devised a heat sink with a sheet of brass, as seen on the far right.
Unfortunately the full scale prototype did not move like I had intended. The change in material to wood along with the added weight of the LED kit changed the overall dynamics of mechanism that is responsible for the movement. This brought me to a new level of appreciation for those scientists who are trying to build robots that can move like humans.