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I'm a big fan of pirates. You know how they hunt for treasure. But hunting for treasure isn't always easy. BUT I have a thing that might help you. The SIMPLEST and CHEAPEST metal detector.

Step 1: 555 ic

You should first know a little about the 555 ic. There are totaly 8 pins in it. The pinout is given in this step.
<p>why metal detector was contuie buzzing</p>
<p>any one have a video of this project lpz mail me at zulfiqarbajeer3@gmail.com</p>
<p>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!!</p><p>so anyone guide me for this</p><p>i m using this with arduino </p>
very nice project, I make it
<p>can we use fixed inductor of 10 mh ??? pls reply</p>
<p>I doubt it. I think the point is that the inductance is supposed to change as the coil comes closer to the metal, kind or acting like a ferrite core you might find in a pcb inductor.</p>
What's the range ? how deeply buried objects can it detect ?
It depends on the inductor. If you use a 10 mh inductor it will detect upto 1 to 2 metre deep.
<p>can we increase the inductance from 10mH and do we must to change the capacitor ?</p><p>what is also the frequency of operation of this circuit</p>
<p>www.metaldetectingway.com</p>
<p>Hello....What is the frequency range for this circuit??? And can you tell me why is the pin number 5 and 7 left as it is???</p>
I HAVE MADE THE CIRCUIT BUT I CONFUSED FOR 10mH INDUCTOR CAN YOU HAVE THE VIDEO OF MAKING IT FROM 555 IC FOR MY BETTER EXPLAINATION AND YOU HAVE PHOTOS OF IT HELP ME PLEASE ^_^
For every one having trouble with building it, I made this metal detector and you can find it<a href="http://www.instructables.com/id/Simple-metal-detector/" rel="nofollow"> here</a>.
I hav a problem while building it, can anyone tell me where is the pic number 6 and 8 in this circuit diagram of metal detector?? Which is pin 0 in IC 555..?
sir., what kind of choke is needed? <br>
can you explain step -3 in detail???
I am just trying to do somethings. thank you so much.
does this circuit really work?i don't want to flunk in my college submission...and can u please explain a little more about the working?
to what kind of depth does it go?
Did you build it?
Over all I like this, I just can really make out step 3 the first photo was a good thing all it needed was a better quality and the second just needed to be explained more. I do thank you for your cheap and easy way to make a metal detector.
Do you have a picture of the one that you have made?
Yeah, do you have a picture of the ONE you made?? <br>Sure would be NICE to see it . and whats a 10 mh inductor/choke? <br>and you get 1-2 meters penetration into the earth ?? More details ,PLEASE.
I'll try and tell you how its working, but im pesimist about it..
&quot;Cheap and simple&quot; is very tempting. But is it effective? <br> <br>I ask that because years ago I did another cheap and simple metal detector. When I tested it the first time, I yelled &iexcl;BINGO! because it detected the proximity of a metallic tool. But soon I realized that it also detected a piece of dirt, masonry, my hand, etc.
Don't worry I've tested it myself and it detects only metal and magnets.
Thanks jumper1111, I will make one of these when I have a time. I am a compulsive gatherer of &quot;maybe can serve&quot; things.

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