Arduino based pulse induction metal detector

Examples of signal curves in test mode:
1 - without a target, 2, 3, 4 - when approaching a massive target:
test_curves.png
 
OK I;m impressed! Lots of people talk about making a detector, some start and get discouraged, very, very few ever get to this stage. Definitely an accomplishment you can be proud of. :thumbsup:
 
Air tests of my metal detector FoxyPI with new search coil:
Detection ranges:
coin 3 kopecks USSR 1979 - 23-24 centimeters,
hard disk platter - 34-36 centimeters
 
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