HOW TO BUILD THE GOLDFINDER XTR METAL DETECTOR COILS. (PART 2: Read Description)
ฝัง
- เผยแพร่เมื่อ 1 ก.ย. 2013
- HOW TO BUILD THE GOLDFINDER XTR METAL DETECTOR COILS. (PART 2) is a premium second part Interactive Video focused on constructing the Goldfinder Metal detector and what is reputed as being the most difficult part if the build. See bottom of Description for The Gold, Coins And Treasure Ebook. , - the metal detector search coil. My Goldfinder XTR Metal Detector has been very popular in the past, so I decided to create a series! As with Gold on the Beach 10 and Gold on the Beach 6 Platinum, we continue to provide helpful how-to videos and movies, with helpful hints and tips we have learned from our many Treasure Hunting Adventures. Please note,- The Baracuda Circuit can be used as a substitute circuit for this Detector.
See our 10 live gold finds on camera and learn how and where to find Gold nuggets with our video, - how natural Gold occurs. Gold on the beach is always exciting. See HOW TO BUILD THE GOLDFINDER XTR METAL DETECTOR COILS. (PART 1) Please note that this coil suits mono loop pi detectors types. The Barracuda will work fine with this coil design, but using .45 insulated wire works best. Take the quiz if you wish, or skip and only watch Interactive, Tutorial style, video.. Please Note - I am not allowed to show you the circuit board because it does not belong to me. See HOW TO DIY ONE OF THE BEST METAL DETECTOR CIRCUITS (Subscribe & share to See More) for a suitable replacement Circuit • HOW TO DIY ONE OF THE ... . To Buy The Gold Coins And Treasure EBook,- Best Price, Click this link,- www.amazon.com/dp/B07YLL9PTR - แนวปฏิบัติและการใช้ชีวิต
i have so much respect for people like you who not only do amazing things, and with your free time create useful resourceful tools that you will later put to use. but you even take the time to show others how to do the same. everyone is complaining about not having a job and here you are making your own equipment and going and making a job, thank you man this is just too awesome. you are awsome
youve been such a scientific help and i loved doing the quiz even tho it was like 2 am for me when i did it
Hi Frederick, great video. I have built 4 of the Silverdog boards so far. Here is a tip that will help folks get up and running quicker. Just wash the solder side of the board when you finish soldering. Do this before you populate the board. first with alcohol or a proper solvent then with warm soapy water. A small stiff bristle brush like a toothbrush works great. make sure you dry the board completely prior to powering up .The 7660 chip is very sensitive to flux residue and washing gets rid of it.
Great video! I live In Arizona and have recently been searching for Forrest Fenns hidden treasure and that has gotten me interested in building a metal detector to search around the mines and old ruins of southern Arizona and New Mexico, and to possibly help me in the final steps of trying to find Fenns treasure.
Dude best video I have ever seen, thank you! You've just made crawl behind my desk and soldering and 3d printing for the next week 😂
Thanks Toby
hel yeah!!! got it right. all of the above.
Good idea
It would be nice to 3d print the coil casing..you can get a water prove container....all you need do is place the coil onto the shell and snap together..
You can plastic weld the snap together shell or glue it.
The bolt of the shell to connect it to the handle can be made from plastic as well on the 3d printer..now connect the shell to the handle..you can also make a mounting shell making it water proof..
The ability to notice this puts you in a league of your own.
Wow nice detector.. I love to have it..
vry niece thanks
After a lot of experimentation with a DB scope and pulse generator I settled for 20 Turn coil of 1mm wire Dia. 100 ohm damping resistor. I sampled after 30, 60 and 90 microseconds switcheable with secondary sampling at I believe it was 300 microseconds after the end of each pulse. (long time ago). Pulse transistor was at the time a TIP42. Receiver used was an analog devices AD507 IC which was much faster than the old 709`s used at the time. I don`t remember the slew rate offhand but it was fast. Pulse rate I used was either 50 or 200 PPS. The audio generator was a gated Oscillator running at a comfortable audio frequency . VCO`s are horrid to listen to. Power supply rails were regulated. Result ... an excellent PI machine powerful and ultra stable. Coils were 8", 12" and a large 16"diameter one. I loaned it to someone and you can guess the rest. Just thought that this may be helpful to someone.
Sounds good
careful not to overload the circuit by using 1 mm dia wire
Crobular I Have you seen the coil layout of the GZ7000. 2 D coils with a square recieve coil in the middle.
thanks for this!
Hi Fredrick. I have watched your videos and they have been very inspirational to me. I have only started detecting this year.
If you get time could you put a video/link of what shovel you used to make your beach scoop. It looks great!
Thanks again
Stephen
(Washington, England)
Can you show us how to make a Hand Held Detector. I have really wanted to make one. BTW- I love the idea of a light signal-there should be a light for each variance of Metal, and Depth-that would really be awesome.
Good job
شكرا جزيلا
Subscribe to see a whole new world of innovations and opportunities to find Gold.(The quiz is just fir fun,, you can skip this..)
Eu não sei o suficiente sobre isso para ser de alguma ajuda. As pessoas que projetam essas coisas são a elite
Google how to diy one of the best ..... th-cam.com/video/gTEED-2Z_lM/w-d-xo.html
hello . . I want to know the circuit diagram about that gold detector , can you please give me the circuit diagram.
The Barracuda can be used here. Anchor electronics own the circuit design.
Good day sir,
I need help, i want to build same thing like yours but i don't know where I can buy the circuit board or some material.
I' m from the Philippines.. Please help..
THANK YOU SO MUCH I'VE BEEN WATEING FOR A VIDEO HOW TO MAKE A METAL DETECTOR,,,, YOUR GRATE ,,,,, KEEP UP THE GOOD WORK!!!!! :)
Northcutt's K9 Training Center ,
Agreed everything u said
thanks
Being an electronics tech myself, I found this whole video very interesting and cool.... One thing I have not been able to find in these types of videos, is how does one adjust (or find) the null point on a DD coil...
I am about to make a coil just for experimental reasons and dont know how the nulling is done.
If anyone knows, I would appreciate the info....
(having said all that, I do own a proper detector, a Minelab Explorer of course and im about to buy the next model, the E-Track which seems better... ive also got five different sized coils from the small 5 inch to the 15 inch WOT.... )
I dont know, but experimentation is what i use
Ok, thanks... just after I wrote this, I found something on an italian video, he uses an oscilloscope to null it... but I cant understand a word he says.... LOL...
good
I've seen parts 1 and 2, but I thought there would be other parts.
I think its really cool videos.
Thank you my friend.
Good morning and thank you for this valuable information, and I have a question please exists on this link . _ (How many turns are in the grand mono coil _18 inch _ and wire diameter user (gpx 4500)) _and how it is linked the wires in numbers? ....my respects.
Wow
The whole idea of using magnetic fields to find metal is impressive.
Frederick, thanks for the videos you have posted and all the information. I am interested in building a detector, but would like to find a source to get a board already built. In other words I would like to get a kit that basically have to assemble. Do you have any suggestions?
I have considerd this and concluded that they take me too long to get the board to work 100 percent and they fail with the slightest mistake.
my brother is more tec savy than me and he can get them to perform, but he wont help me anymore.
so yes it is a tricky project but they can perform well in salty environments and low mineralisation
what kind of detector do you have also? what do you recommend for someone new to the hobby? (Answer both plz thanks)
Good day mate! I used 0.25 copper wire with 20 turns on my 9.5 inch coil ,it can oily detect 3inch bellow,any tips to increase depth?
I have all the wire needed and the detector is an Garrett AT gold but I want to make a larger DD coil myself. How would I know how many turns to do on each side of the coil. Because each side has different size wire. One is 32 AWG Gauge wire and the other is 25 or 28 AWG Gauge wire? Also do I turn both side in the same direction or do I do one side clock wise and the other counter clock wise. ?
Every Detector is different. Only the designer knows what will work best.
Hello, I see that you added the .45 insulated wire, thank you for that. Can you tell us how many loops you made with the wire, and what is the diameter of the loop itself? Having the size of the loop and how many times you wrapped the wire around will be very helpful. Thanks again, great video.
I used .5 at 22 turns and 8 inch diameter, but .45 at 25 turns and 9 inch with a slight elliptical shape should work better. however i found the hard part to be getting the the circuit to work.
@@GoldfindersAu In the USA the wire comes in gauge, and the closest in mm in diameter was 53 gauge, which is ,49 circular Mils nominal. So when you say .45, I found nothing, so give the inductance of the coil, and that will be a good starting point as I can measure inductance.
loved your video, could you use a metal detector coil cover for your mold? you could fill it with your resin with the two end wires out then when the resin gets cured you could add clay to make a mold for the two brackets on top of your new coil mold and fill them with resin to hold your pole. Do you think that would work?
I dont see why not
thanks for an interesting video, would it be possible if you could tell us which board you used or would recommend from silverdog boards,, thanks again
You can use any of silverdogs board. just be aware that the are tricky
Hi Fredrick
Can the Baracuda PI Board be modified and set up for the Double D coil?
Ron Gill
Normal
0
false
false
false
EN-AU
X-NONE
X-NONE
MicrosoftInternetExplorer4
i think so, but i wouldn’t know how to do it. A faster balance
or manual ground balance would mean that it would work well in goldfield areas.
Standard,- it works best in salt or normal ground
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin-top:0cm;
mso-para-margin-right:0cm;
mso-para-margin-bottom:10.0pt;
mso-para-margin-left:0cm;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;}
Ron Gill i think so,- but i wouldnt know how
Hey Frederick, in this video when you tested the loop you used 4 batteries.
In part 1 when you make the housing etc you have 2 x 3 battery packs??
What were the voltages of the 2 x 3 batteries?
Are you sure that loop is 11 inch or 28 cm? I cant find a painters bucket that large the largest I found was 10 inch or 25.5 cm.
Great videos by the way. You have made me want to make the Surf PI as well.
Gregg Pearson Double up on power, not volts. dont excede the 13 volts from li ion batteries.Around 8 inch mark for round coil is great for most applications
Frederick Barnes Thanks for the info, I noticed in your latest batch of videos you've stopped using the Surf PI?? or is it because you tried it under water when it leaked, did it not work after that?
Hope you have a great New Year and thanks again for the videos.
Gregg Pearson the surf pi dosent work at all on the goldfields.
Ingenious! Quick question, is it advisable to waterproof my stock coil with a rubber liquid spray such as Perma-Seal?
No , Dirt will stick to it. Usually the only part that lets water in is where the wire comes out ,but if you damage a stock coil you will most likely have to buy a new one.
Also, if you get rubber between the wires, it will add capacitance to the coil, and may not work as you want as a detector.
use yacht varnish
Hello Mate. My name is Chang. nice to meet you. I love your videos also Explanations.and the thing that i like so much is where you went for prospecting. i have seen so many people go prospecting where short vegetation growth. but you went to jungle and got some nuggets. one question what do you thing about boddington?. should i go for prospecting? thank
Phuvapat P
wondefful
thanx for your reply, also what the size of the coil, i also am playing with the surf 1.2 and all mine does it detects iron, gold is very weak and can hardly be heard, ive made a coil 25 wide and used 21 turns and im also using .5, and ive insulated it with foil, and electrical tape.
i am not an expert but i can tel you to be careful with the crcuit as it is easily damaged.and i dont know how to fault find
try 20cm wide,- and iron is always first on the pi list.- you should get 25cm on a small ring
Frederick Barnes look online for how to make the surf pi 2.1.the coil used there is better for salt and normal ground.
Hi, Do NOT cover your coil with foil. This idea was used by some manufacturers for their BFO machines as a Faraday shield. Not a complete shield but with a say 10mm gap in it and connected to 0V or ground. This is not required and must not be fitted to a PI coil. Not in my book anyway.
Crobular I I tried the Faraday shield on my PI before setting in fibreglass. Didn't do a thing on mine, hehe excuse the pun.
#2
There is enough info to make a pi detector
i have tried to make it simple, - but it is quite a challange
Could I ask please when you were winding coils for the Surf PI 1.2, did you try stranded wire, thank you.
Kenny444 Tourist Look up how to build a surf pi 1.2 pulse induction metal detector as it shows a more suitable coil
Thank you, very greatful and always viewing you great videos.
I got it right haha
Have others part (part3; part4...) ?
Thanks
Greetings from Brazil.
this is really cool but i don't think i could pull it off so i think ill just keep using my x-terra 705
what about multiple rings - with different diameters ( 11" and up ? )
i wound 2 coils 6 and 7inch with very fine wire 28 to 30 gauge,, however, before finding this site I put 120 turns on each coil//will it still works?
There is very little resistance so it shouldl not burn out the circuit. how well it works is interesting .My guess is that it will be too sensitive to the ground conditions.
Hi, I just built a Surf P.I. v1.2. When I go to shield my coil with aluminum foil, as you did, I get no audible response from the speaker. I do however hear a buzzing sound coming from the coil itself. A bit odd/scary. Have you (or anyone) ran into this issue, or know how to fix it (besides removing the aluminum foil)?
Thanks! & Thanks for all of the great videos
+ralphroc No , only be careful as so many things can go wrong. Congrats the surf pi is a very dificult project
+Frederick Barnes Too much puts the circuit into overload, same for other metal around
Thanks for the reply Frederick, and thanks for the compliment. It did take a lot of trial and error! I'll try some thinner foil. I've currently got my ~8 inch coil detecting just over 6 inches. Trying to get a little deeper. Took a ton of tuning, I thought it was broken at first, but it seriously took 20+ turns on each dial before it got a signal
What's a surf pi? A metal detector? Or is that like a raspberry pi board?
It's a Pulse Induction circuit, search "surf P.I." on google and you'll find the maker selling out of Europe. It's basically a kit for building the brains of a metal detector, and then you need to build your coil, etc like Frederick's video. It's a tough circuit to build, minimal instructions, and a lot of small soldering to do, but if you can make it, you'll have a $1,000+ detector for a fraction of the cost ($150-200)
can you tell me about your beach shovel I could use one like that thank you
cut from cyclone plastic shovel see website at end of video for instructions
Can the diy coil be made for any detector? If so is there any snags I might run into?
No, they are all specially made to suit otherwise it will damage the circuit.
YAY got it right
:D
They are designed to challenge and trick you
What kind of cable do u suggest to connect coil to MD pulse induction?
Only the manufactures know that answer. Pulse induction Detectors are designed to be very sensitive so i think a faraday shielded cable would work best.
My question is: what are the most accurate or perceptive materials for a high quality coil based on small gold nuggets in depth detectors?
Pulse induction detectors return signal is designed to ignore anything non metal
but that question is very interesting
Frederick Barnes I am trying to fully grasp how and what is necessary to find deep, or wide. Using a Iron Rod boosts the Magnetic field-so; could it be that by placing small wrapped rods in various places could boost-and eliminate needs of adding coils?
Quick question...if I added more copper wire for the coil, would that allow me to get a stronger signal???? If not, what will adding extra wire do? And how would I get a stronger signal???
There is a limit what is optimal, but more importantly the whole coil can't weigh more than 300 grams or it becomes tiring to use after an hour or so
Hi mate confuse on diy coil,how do I calculate coil turn on 0.25mm copper wire ,any instruction for the calculation
That is the same thing I'm trying to figure out. I have all the wire needed and the detector is an Garrett AT gold but I want to make a larger DD coil myself. How would I know how many turns to do on each side of the coil. Because each side has different size wire. One is 32 AWG Gauge wire and the other is 25 or 28 AWG Gauge wire?
@Goldfinders At 2:35 you said you used a 11 inch or 28cm coil but later in the comments you told @Gregg Pearson "Around 8 inch mark for round coil is great for most applications" is that because you distorted it to a elliptical shape? Thank you
Exactly Right. Only slightly elliptical shape will give you the same sensitivity as a 8 but the sweep of a 11 in, but it also depends on many other factors.
Thank you for the reply, really appreciate your videos. Working on assembling a rev-a now. Did you have to change the R1 resistor for this coil? How many turns did you use 20-22?
22 turns is better because i used .5 instead of .45 .using wrong wire can burn out the circuit. i am sure that there are many ways to improve on my work.
Awesome again thank you so much for the reply. I am also using .51 or 24 age wire but still have to test it before connecting. Did you have to change the 330R 2 watt resistor for this cool?
No the kit works pretty well with the parts supplied. getting it to work without any mistakes was not easy.
Capacitor at coil is most important
do u think its possible to make a coil for a Deeptech Vista Gold. do u think i will get more depth too. one i use is 11"7 only...
More depth on larger items with larger coil
Frederick Barnes will it not make smaller items more depth? as some upgraded larger coils on machines in the past have gave more depth on smaller objects, do u think its possible to make a great bigger coil for the vista gold?
Correct Mr. Barnes. Everybody remember that the field generated drops of with distance by inverse square law. Look it up.
hello what's the best wire to use
ما هو البعد الفعلى للجهاز , ? what is the deeper range
Estvan Estvan لم يرد عليك
nice video,, please is possible to build one that can detect up to 2.5m?? thanks
No.- The only very elite can. Minelab Build Detectors that can.
@@GoldfindersAu ok,, thanks for the quick response
How about making a coil to go inside of a boot for a stealth metal detector? That be pretty cool. Is there anyway to add gain to a small coil with more than one coil?
I thinking more of the yagi antenna design but putting that concept into a small coil, so on a yagi antenna you'd add more elements to get more gain so I was thinking maybe that might work with a small coil by adding more coils to get a more powerful coil.
Nice idea but the coils would have to alternate ,i thinkl
See part 1
well if u house the coil in a material that bends the upper part of the magnetic coil it may extend even more the bottom side of the magnetic coil, the side that points to earth.
i will try that
At 14:26 you said you "used hot melt glue and carved _____ stuck on to the bottom of the bucket" what did you say there? Timber? Just wondering how you were able to carve deep slots in the bucket for the bracket when te bottom of the bucket doesn't seem that thick. So I'm guessing you cut two rectangular holes and then created some kind of cavity to attach to those holes so the melted plastic has somewhere to go.
For the hole for the cable. You said to use silicone. Not sure what you mean there but wouldn't using like a pen case in that hole suffice for when you pour the plastic into the mold? That is if the pen case too is non-stick like the bucket plastic.
+christopher jones There are many ways to skin a cat so to speak.
+Frederick Barnes true but yours came out beautifully.
!
Hello! How is wire gauge? And how many turn you do? Thank you :)
.45 wire 22 turns is close to being right. i used .5 to save time.. not enough wire will burn out the board however
Thank you!
i used 30 winds- i tried 350 to 400 nm or inductance from multimeter, but found no gain- let me know what you discover
I have found that the best coil is made with a generous application of paypal ;)
Hello.
Please how to make PCB board this metal detector ?!
When you mention .45 insulated wire for the coil, what is the .45, is that millimeters? Can you change that to gauge?
Doesn't matter,- This detector is very simple. Thicker wire will damage the circuit.
Is there a factory metal detector that you would consider similar to yours?
There are various pulse induction detectors around. these are used to power through salt or mineralised Gold fields. they are expensive however. CS4pi by c scope is similar in power but it cant operate well outside salt water.
Thank you. I have watched your build videos, you put alot of effort into them. I appreciate that it gives me more confidence to try this. I dont think a $1500 plus store bought detector is in my immediate future. Thanks again
Discriminating Very low frequency VLF - are relatively cheap and can pick coins from rubbish areas
I'm in central Florida surrounded by beaches. I would like to search in the water waist to chest deep. I dont mind digging whether trash or treasure I find it exciting.
Difficult to master water hunting, but if you find a spot where heavy items gather you can get a good return
can you post there scheme with discriptions ? i need i i want to make detector like you
can thicker wire be used for the coil?
Numisaccent You would have to use a lot of it, otherwhise it will burn out components on the board.
Will a 45 awg still work for coil wire
I think so....never tried it
Do you have a idea on how many turns it will take for the same size coil you made
I found that 22 works best but i didn't use the proper testing equipment.
Hello.I have a question , how can I build a metal detector with at least 3 or 4 meters range sensivity? Thanks
Good question... might have to use ground penetrating radar.
@@GoldfindersAu can I build it by my own?
Need experience or money to learn from mistakes...There are many things that can go wrong.
@@GoldfindersAu such beautiful sentens.thanks for spending time for me.be succesful.
What is the best kind of wire to use, is it magnetic wire or ??
Just insulated Copper wire.
how many times did you wrap the wire around?
theguardianss11 22
hi... do you have one like this to sale ?? and how much
The more wire you use the stronger the detecting ?
The coil becomes heavy, and no better results
I have questions please?
what is the best for wide range
thik coil or thin coil?
or what is reason for a wide range and deabth?
Thin and light is best,- no more than 300 grams 8 diameter works best on coin size objects.
Does it work good with the rocks?
Better than most
Thanks
Build a coil in a coil cover?
الخيل من خيالها
I love how you keep saying "its just a simple matter of..." Sometimes thats all someone needs to hear to absorb the info
+Jodi W Thanks , its not easy making simple from very complicated
lol i know right
- I think i say that too often
More. buy a none working coil, cut the bottom out, build coil in top and use a cover as a base. :-)
u should use allot of more wire with smaller gauge wire, and maybe increase the voltage, that way im just guessing without any bases... u may get better performance
.point 4 with more turns good idea
i was just worried about the wire absorbing the power rather than turning it to magnet fields.
Frederick Barnes i based that comment in work of a guy named Joseph Newman he had a giant spinning magnet powered by allot of 9v bat in series, high voltage and from what i understood of his work, the more wire u have of smaller gauge, more u can increase the voltage and bigger is the magnetic field. i'm not sure if i got the thing right.
1
how much turns did you use for you coil and how what is the width
20 turns at .5
Hello, good job, but... What's the coil diameter? (not the wire diameter but the coil) Thanks!
I think he said 11"
Could I buy a Minelab X-terra 6" or 10 x 5" coil on ebay and then build the rest?
Coils are matched to the circuit, chances are it will destroy the circuit or not work well. There is a possibility that it will work well,- but the circuit is tricky to build or repair
need maps of old timers gold diggings
Is there any reason that you cannot purchase a professionally made detector loop and use that instead of making your own? Is there anything about the electronics or any other parts that would make that a problem?
The casting, etc. seems like a huge hassle to me. I'm confident with the electronics and the shaft/handle/etc. but the casting, while I'm sure I could manage it eventually, seems like a hell of a lot of work.
It is very challenging,- but at the same time rewarding,- as strange as that seams
Frederick Barnes Actually, after pricing professional coils, I am reconsidering making my own. Most largish coils are $300+. Way too much.
Hassle or not, I'm going to need to mold my own. Is there any reason why I could not use a small diameter (say 18-20mm) flexible PVC pipe filled with araldite or hot glue to make a circular enclosure for the coil and then glue some braces in a + pattern up/down and side/side to it in order to keep the geometry from distorting and to provide a mounting point for the pole?
Or, how about cutting off all but the bottom 10-15mm of a 300mm diameter plastic bucket, placing the coil into the shallow "dish" that results, placing the coil and then just drenching the entire thing with hot glue, araldite, or some similar waterproof adhesive?
Oh, I see that that is exactly what you have done. Is it compulsory to mold the mounts and cut out areas in one piece or can you simply glue them to the coil enclosure later?
Apart from being light, waterproof & rigid is there anything else that needs to be considered?
On a related note, how do you prevent water, dirt and/or sand from getting in via the hole left for the plug connecting the coil to the cable? Seems like an obvious point of intrusion.
Thanks.
Oh I almost forgot, what are you using to cast the coil enclosure? Is it proper molding material as used by artists/sculptors, etc. or are you just using large quantities of araldite or something?
araldite is best cos it wont shatter
Holy crap, really? How much did you have to use? That's a hell of a lot of araldite.
Do you think casting material would work instead, for example this stuff:
www.bunnings.com.au/diggers-500g-cast-and-embedding-resin_p1874117
Or is all casting material prone to shattering?
whats name about the black box?
i was just curious, because there isnt many coil's for my metal detector as i need a big one, is it possible to use a same KHZ coil as the machine, aslong i transform the coil connector anyone?
I dont know but i dont like your chances of unwinding a specialy made coil
it in theory should work with new same length same size wire and less turns larger diameter
tip-By broken one and reverse engineer it
remember you loose sensitivity on smaller objects if you do go bigger
i am not an expert but
how much turns did you use for you coil and how what is the width thank you
احمد عبد العاطى i used 22 turns with .5 insulated copper wire 8 in diameter. but you can use .45 so long as you dont use too little as the resistance can damage the circuit
Frederick Barnes Hello Mister Frederick first thank you for Alrdaly my question and secondly Aezrny errors in the language because I unto thee by Google Translate and I hope to visit us in our city Alascndar and see the beautiful beaches Alascndar please Sidi I want to know what is the perimeter SEARCH COILS and you very much
Frederick Barnes If you went in and out of the nails-as you were making your coil-would that distort your signal-and for the last few rounds could you rope the copper around the circle? In Wires/Cords the signal is boosted by going around the strands-that is why I was asking.
Robin Sauls i will try that in my next experiment
how long under ground it can detect gold
Like most mid range Pulse Induction Metal Detectors, it will detect a can at 12 inches in the most difficult salt and mineralisation,- a Gold ring at 8 inches max.
The really expensive Metal Detectors made in USA like the Whites TDI now days will double that performance.
Even then the coil needs to be much larger.
Boss, please describe the materials used to make the matal detector... sorry boss, who knows, I can use it
i have damage coil of nokta métal détecteur what can i do please???
Glue it or solder any broken wires. What part is damaged?
Can you give us a link of the metal detector circuit if you are not allowed to show us.
Thanks.
Go to this web site, where you can buy the Surf PI they show you the scematic as well as the parts list.
www.silverdog.co.uk/shop/index.php?route=product/product&product_id=76
What frequency is that home made?
I don't know. The original designer would know (Anchor Electronics in uk) but they have moved on