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Stuart I , Working but differently !

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  • Stuart I , Working but differently !

    Hi all;
    I just finished the Stuart project and it's working but with a different manner.
    I get in the output a very high tone sound wich disappear or decrese very substantially at the detection of a metal. I havn't succed to determine why .
    but sensibility seems to be very good. i can detect a 1Euro at 20cm. 1cent local (1cm diameter) at 18 cm. hammer at 30cm.
    When i try to put my threshold at no sound clicks appears when metal is detected but at very low distance 2cm from coil.
    I f any one can help ?

    I replaced 4011 by 2*4012, and i used NE555

  • #2
    Just TR5 soldering problem resolved and all is fine.

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    • #3
      Test of Stuart 1
      https://youtu.be/bnAshSqfNw0

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