Metal detectors.

Ok so I want to get a metal detector. But i don't want to spend a fortune but don't want to spend $10 for a stinky one. I'm looking for one for around $50. I just want to look around my yard,and see if theres anything interesting (once i found a little diamond or some kind of rock).

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i want to make a metal detector using tda0161, when the detector detects the metal from a specific distance the buzzer sounds but as the metal comes near and near the buzzer sound increases!!

so anyone guide me for this

Saw an article to make one with an arduino, Then there is the old radio calculator trick. Some peoiple have made them with an 555 ice circuit.. you can make them a lot cheaper than what they sell for in the store just have to do a google search. http://www.electroniccircuitsdesign.com/sensors/tda0161-metal-detector-electronic-schematic.htm
TommyVarro4 years ago
It seems you are looking for a cheap metal detector since you regard metal detecting as your new hobby. Well, $50 cannot buy a metal detector, maybe a body scanner.
mfox56 years ago
I got a bounty hunter junior from goodwill for 10$. I was gonna look for an instructable to possibly make it more powerful or something, but found this post and was surprised to learn that it was any good. lol.
...now, what i really need to do is possibly make it extend farther.
Being 6'3 im not exactly junior size and not bout to ruin muh spine.. ;3
devros8 years ago
What you want is a Bounty Hunter metal detector, I have a few of them. The one you want you can find on ebay for under $100.00, its the Tracker IV, it's not a deep machine, but will find anything metal up to 5 or 6 inches under the ground. My son just found a 1881 Indian Head penny with it. It's a good machine for the money it costs. if you find a couple of forums that talk about the tracker IV you will see that its a great machine. here is the link to the detector from Bounty Hunter. <br /><br />http://www.detecting.com/products/product.cmdl?c=8166fcf29a1111d4<br /><br />Oh not to sound really rude but that one from amazon is not a good machine, its junk, check out the tracker IV it wont steer you wrong nor would I. hope you like it.<br /><br />
Goodhart10 years ago
I built my own years ago. The hardest part for me was getting the "coil loop" or feedback loop properly wound and making my own Faraday shield properly (I wasn't very old at the time). I threw together a little circuit, very similar to the one at EDN: Circuit for Metal detector

Easy Button (author)  Goodhart10 years ago
Ya, I think I'm better off buying one.
Yeah, mine was good for finding nails (and therefor studs, pipes, and electrical wires) in walls though :-)
Easy Button (author)  Goodhart10 years ago
Well my yard may be full of stuff mainly old stuff because my house is like 250 years old.
I understand. You need something that will work fairly well, without the hassle of trouble-shooting it. I just did it to learn more about comparator IC's and inductance.
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