The dimension of the outer wood construction is 4 × 4 × 3 meters. There is a motor at each top corner. The motor is controlled via a motor driver by an Arduino. The motor is moving a reel which winds two strings. Each string is connected to an elastic cord which forms the top and bottom edge of the room. Cords which shine under uv light are spanned between the elastic cords. The movement of the motor stretches or relaxes the elastic cord: The room is getting taller or smaller.
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I will pay some materials.
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