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Digital BFO Metal Detector

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  • Digital BFO Metal Detector

    Are there any real digital bfo metal detectors ever made?
    I didn't find much information about this Zenith Radio Corp..

    There you is the complete document at "Alkuperäinen julkaisu" -> Save full document.
    http://v3.espacenet.com/origdoc?DB=E...QPN=US4321539#

    http://www.freepatentsonline.com/4321539.html

    What if we hook coil oscilator circuit directly to microcontroller which implements frequency counter, averaging, sound generating etc. What could be the maximum detection distance for a coin?

  • #2
    has released up. on Atmel+NE555 TX stage. Tracker-FM by Andrej Schedrin & Jurij Kolokolov.

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    • #3
      Digital BFO Metal Detector

      Here is link for the Tracker FM. http://www.metdet.ru/FM.htm Eugene

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