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        Interacting with the physical box involves triggering one of two sensors mounted to the surface of the object. Triggering the right sensor causes the motor to turn clockwise while triggering the left sensor causes the motor to turn counterclockwise. Triggering both sensors at the same time causes the motion to stop. The electronics used for this box are all analog.

  By triggering the sensor with a small solid object (such as a coin) the motor is activated.
  Two Toshiba TLP507A sensors were used. When the IR beam is broken, the output changes from 0 volts to 5 volts.
  The motor is attached to two vertical planes which move left and right as the motor turns in a circle.
  A simple pivot point was constructed with a dowel, wire, and rubber grommets.

Casey Reas ( )