An old GENERAL RADIO Co. resistance box is converted to hold multiple pulsing pen drives with light observable through vintage radio vacuum tubes. Room for a 1T hard drive. Prisoner of technology trapped inside. Not difficult to build but finding the parts is. Two pen drives are easily removable. Pen drives must be un-shelled. Sandisk Cruzer drives are the product of choice for this project because they continuously pulse and then flicker when data is accessed and are a quality product of course.
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