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The Mechanics
MOTORS INSIDE INSTALLATION WALL The tree’s movements are controlled by monofilament attached to its branches. The monofilament runs horizontally between the two walls of the installation’s enclosure. There are two sets of controlling mechanics inside the walls, each with a motor with an attached rubber wheel on one side of the enclosure and a corresponding pulley on the opposite side. The monofilament was stretched in a loop between the motor’s wheel and the pulley’s and attached to a branch on the tree by a small piece of tape. The motor, controlled by an h-bridge circuit, could rotate clockwise or counter-clockwise for a predetermined period of time and control the position of the attached branch.
DETAIL OF PULLY
The Installation
An enclosure was constructed on-site to darken the screen sufficiently to allow the projected images of the tree to be visible in the brightly lighted room.
A video projecter was suspended at the top of the enclosure to project the image onto the screen behind the articulated tree. It was placed high enough to prevent the tree from casting a shadow onto the projected image.
The ground below the tree was covered with shredded bark. The side walls were covered with black cloth. The top of the enclosure was made from 3mil black plastic.
The installation was presented at Friday, March 16th, 2007
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