That, my friend, is a very noble project. There are numerous circuits out there that would work but the new plastic mines would be immune to that process. There was a radio controlled metal detector reported right here on this forum around a year ago. It was being sold on eBay. That would have been superb for your application. We all had a good laugh about adding a shovel to it and so forth.
Use the search feature in the top right corner of the forum to see if you can find the topic and all the replies. The topic was called Lazy Man's Detector
Aside from that, read this article:
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http://www.thisiswiltshire.co.uk/news/1419837.john_invents_treasure_hunting_robot/
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http://www.thunting.com/smf/index.php/topic,16957.msg108884.html#msg108884
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« Last Edit: August 06, 2010, 04:07:36 pm by GoldDigger1950 »
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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!
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