Consultant Ed Brown was retained by the Minimalist Electronics Society
(MES) to design an electronic intercom that would allow the group's
president and secretary to speak to one another between the two tiny
structures that served as their offices. The only condition was that the
intercom must be as minimalist as possible. A conventional intercom
would require a pair of conductors, which was one too many. The soil
under the offices was desert gravel and much too dry for linking the
offices with a single wire and a ground at each end. Cell phones or radio?
No way. Their signals would be sprayed everywhere, thereby violating
minimalism. Power line link? No. Each office was powered by its own
roof top solar panel. Brown finally thought of a solution. What's yours?
Go to Jameco.com/search12 to see if you are correct.
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November 2011 5