I recently discovered a really cool method in using a few household items to make a HomeMade Metal Detector! Heres how to make your own!

Heres a link to the video : http://www.youtube.com/watch?v=_G5HzeIl9cY

Step 1: What you need.

All you need for this project is, an: AM Radio , some tape , and a small calculator.

<p>Do we need a beeping calculator for this project or any would work ?</p>
<p>&quot;You will notice that the calculator beeps whenever you get close to metal. It beeps even faster the closer you get to the metal. &quot;</p><p>This was my first clue that this makes no sense at all. What would possibly induce the calculator to beep in the presence of a metal. Surely it would do so whether it had a radio strapped to its back or not. Never seen one do that yet. </p><p>If it worked at all it would have to relate to signal strength received by the radio due to reflection or eddy current losses as the radiated noise approaches the metal. Then maybe there would be a barely audible change. It would be nice if there was some Beat Frequency or Heterodyne effect, but since the radio is not &quot;Tuned&quot; to the calculator's oscillator or any thing like that this is unlikely. This does appear to happen when buttons are pressed as has been mentioned by others, and that is not a surprise.</p><p>B.S? I think so.</p>
<p>If you check out the article on <a href="http://www.boomersdetectorguide.com/" rel="nofollow">http://www.boomersdetectorguide.com/</a> you'll see that the science is sound. While it might be really low-powered, you'll see that it makes sense.</p>
I did not make .recently i involve heare but i need a long range one because iam in wonderland ..its really tresurs land i pound 74 sighns and codes .but i want perfact target ..plese anybody help me
<p>Work on your English so people can understand what you're trying to say. </p>
<p>i am making this..but does it actually works?</p>
Iam zaheer from uper pak .its really historical sites for tresures .and i need a reall helpr intrest one plese
<p>Tried it. Yes it works.</p>
SergentLaughter, Try taping one or more of your calculator buttons down, that should do it ;) Oh ya, RazorG606, nice idea but it is already all over the net. Another Thing is that yes it is a metal detector, but the range of this project is too small for anything other than finding coins in the sofa and studs in the wall. But still, if you hacked the radio to give more reception and then put aluminum in the calculator, then put a faraday sheild in between the two devices, the range should increase enough to match a full scale one. P.S. If you try to make the excuse that I do not know what I am talking about, you should know that I did your project a billion times (maybe not a billion, but close enough) and I'm a jack-of-most trades. Meaning, I can make or repair ANYTHING you can THINK of. So that being said, hope you take my advice, at least with the faraday shielding. That should make the most diference in range. I hope by the time you get to the end of my comment, you do not take offence of my p.s.. You see, people seem to think i'm stupid and a was just clarifying the reverse of that. Hope to talk soon, For Better or Worse
Lol, right next to your JACK OF MOST TRADES(who can fix anything on god's green earth) award you can put your humility award as well.
<p>I know it's 3 years old but I have to say: LOL..Good one!</p>
Ahahahahaha! I love the world sometimes. My son happens to be watching an episode of Curious George with this on it when I stumble to the page.
<p>The reason why I even looked this up is because my son was watching the exact same episode and I wanted to be sure if it really worked or not. haha</p>
<p>We just did the exact same thing...finding Yorbo!</p>
<p>ive tried it,am/fm radio and calculator but it ddn't work, does it needs to select w/ calculator and radio i must use?</p>
did not work.
This sucks nobody try this. does not work at all. bought a radio and went to the beach tried it out and there you have it $15.00 Down the tube. Razor g is a scam
<p>This is really cool :) I lost my quarter and instead of digging between the cracks of my couches I finally had something to help me find it lol :)</p>
Hey great 'ible even though u only found a spoon from a few inches away it's a good place to start :)
<p>Put an electro-magnet behind the radio and it will be MUCH stronger, there will be alot more edicurrents generated.</p>
<p>Fabulous,thanks for the idea!!!</p>
Very nice,what an easy way to make a ditector!
nice gag , the beeping is a give away LOL
would there be a great difference if i use am/fm radio along with the calculator as my metal detector?
Maybe it works better with a calculator without cell?
I am very happy. I have not money.If have money,there is not eassy to buy this b/c of my country. I very thank to you.
And just to clarify before the trolls jump on this and attempt to disprove things based on one small formality..<br><br>http://preview.tinyurl.com/3ltb6ng<br><br>(you notice I gave you the preview of that url, that's cause I know how ppl are with redirector sites, so before you say Hurr Durr, just check em)<br><br>The TI-108 unit is solar powered and does not use a battery to power it. (from TI's knowledge base)<br><br>So no that calc in the video DOES NOT have a battery. Still, it is able to use the ambient light (carpet doesn't have to be 'reflective' for light to be available in the room, as a matter of fact, solar calculators require very little power) in the room to function.. How amazing is that?
Thanks for the good info.<br>I published a website that has guides to making a more advanced pulse induction metal detector based on the same technology found in minelabs gpx series gold detectors. It's really easy to build and I'd defiantly recommend it to someone who has some electrical skill.<br>http://www.miymd.com
thx alot
Wow, I didn't know the OP was an Alot. That's really weird, I didn't even know the Alot species was capable of intelligent thought.
Wow, thats clever.
do studfinders work the same way?
Oh ya, RazorG606, I forgot to mention that if you are interested in stuff like this, Try Making my analog Transmitter from random things. It needs some improvements, like faraday shielding. Hope you leave plenty of comments for me.. One other thing, if you do not know what a faraday shield is, it is usually a steel sheet or mesh that is grounded to the negative of the battery terminal or is earthed. Hope this helps. For Better or Worse...
amazing im trying this out
Well i just need to get a calculater and a AM radio or watever its caled and try it out.&nbsp;ill&nbsp;tell u wat hapens wen i do it :)
man.......i tried to make this thing and yes it does make a loud noise when close to a calculator......but it doesent make a ring voice when near a metal any ideas???
does this thing really work???????????????????????? answer now
I tried this and could not get this to work all i would hear is a tone every time a key was hit on the calculator and that was it...Any advice?
of course, there is no video here at this site. but if you go to www.metacafe.com, you can see the full length video of this prank. Please do yourselves a favor, watch the video, take a good look at him passing the metal detector over the spoon.
HMM? Where do I start? To anyone who fell for this trick, this kid has got you buffalo'd. Take a closer look!!! He's using his thumb to press the buttons of the calculator as he passes it over the spoon!!! LOL!!!
dude this works! i tried it with a basic sony calculator and a scientific calculator, a texas intruments ti30xa. and to answer someone elses question, yes it does work with radios with headphones and radios with speakers
tried it, didn't work, I'm pretty sure that this is a fake.
even if it worked, you would hear a beeping tone, just a difference maybe in the tone, but I really doubt it works!
this guy's been all over posting bogus DIY's and other such junk. I think it's the same guy who put up all the fake ghost hunting vids on metacafe, and deletes all comments pointing out what a ridiculous liar he is.
It didnt work for me. the calculator made interferance with the am radio as suposed but when a near metal object there was no diference. I tried many combinations 2 different radios and 2 different calculators inclouding a TI-84+.
you used one of THOSE?!? 1)they're expensive. 2) for how much they cost, you could just BUY a metal detector.
could you use an Am / FM radio on the AM setting
i know this question has been asked but can u use a fm radio

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