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DIY Sensitive VLF METAL DETECTOR With Smartphone (detects a Small Metal Coin at 25 Cm and Pot Lid at 1m Distance) : 3 Steps - Instructables
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My arduino VLF metal detector w/ metal type discrimination . Not finished but making good progress (build album 10 pics) : r/arduino
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DIY sensitive VLF METAL DETECTOR with Smartphone (detects a metal coin at 25 cm and pot lid at 1m) - YouTube
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