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DIY Mono Coil for Pulse Induction Metal Detector

  Рет қаралды 26,016

Surf Detector

Surf Detector

Күн бұрын

Пікірлер: 130
@josephatherton2781
@josephatherton2781 Жыл бұрын
Thankyou , that's is good information on building a metal detector coil
@SurfDetector
@SurfDetector Жыл бұрын
You are welcome. Check out my video on the Dual Field coil.
@moheialdeen
@moheialdeen 2 ай бұрын
thank u for good info , how much deep i can get from this coil with your nano pi ?
@caetemh
@caetemh 7 күн бұрын
Hi! I'm building a 50x20cm mono coil for my GPX 4800. Could you tell me what the ideal inductance and resistance would be for this coil? The soil here has very little mineralization and medium to large nuggets have already been found. Can you help me?"
@ImaginaPower
@ImaginaPower 2 жыл бұрын
Love your videos
@AiQuantitativeTradingSystem
@AiQuantitativeTradingSystem 2 жыл бұрын
Hi dear Can you put a link for buying copper tinted sheilding you used
@SurfDetector
@SurfDetector 2 жыл бұрын
www.3m.com/3M/en_US/p/d/b10180533/
@silentgaming9328
@silentgaming9328 3 жыл бұрын
I have a doubt, first you have to put the plastic tube then the mesh or a copper foil and then electrical tape over it? Or do you have to leave it after the mesh or the foil
@SurfDetector
@SurfDetector 3 жыл бұрын
Read this excellent article www.geotech1.com/pages/metdet/projects/fastcoils/FastCoil.pdf
@silentgaming9328
@silentgaming9328 3 жыл бұрын
@@SurfDetector Thanks answers almost all my doubts
@ImaginaPower
@ImaginaPower 2 жыл бұрын
Great job and thank you.
@SurfDetector
@SurfDetector 2 жыл бұрын
Glad to hear that you liked the video. Please subscribe and share.
@ivanbiasutti4567
@ivanbiasutti4567 3 жыл бұрын
i have to make a coil for the surf pi kit. Can i use a wire of 0.3 mm instead of the 24awg (0.5) or the resistence is critical for that project (usually the resistance increases with a thinner wire ) ?
@SurfDetector
@SurfDetector 3 жыл бұрын
What is of greater importance is the inductance of the coil. You should try to make it around 300uH
@ald6686
@ald6686 Жыл бұрын
Totally awesome video… clear and informative! Thank you. Could you please post a link to the plastic? form for which you potted your coil within… and what epoxy did you use to do the potting… Much thanks and great job!
@SurfDetector
@SurfDetector Жыл бұрын
Hi There, thanks for watching and glad that you found it useful. I belong to the geotech Forum, I purchased the shell from one of the members who makes them. Here is the type of epoxy that I use for my coils: www.amazon.com/Crystal-Casting-Coating-Jewelry-Tabletop/dp/B08F378LTB/ref=d_pd_sbs_vft_none_sccl_4_3/146-4088779-5477635?pd_rd_w=FFoR7&content-id=amzn1.sym.bf42acb1-03cc-4a7b-a343-860b9e7fe4bf&pf_rd_p=bf42acb1-03cc-4a7b-a343-860b9e7fe4bf&pf_rd_r=3KW3D7PQYR544FKM1SJ7&pd_rd_wg=pnmVs&pd_rd_r=bfa989a4-cf72-4759-8e11-2cb62a508cb7&pd_rd_i=B08F378LTB&th=1
@ald6686
@ald6686 Жыл бұрын
Thanks for your speedy response… happy hunting! ;)
@ald6686
@ald6686 Жыл бұрын
Thanks for your speedy response… happy hunting! ;)
@ald6686
@ald6686 Жыл бұрын
Thanks for your speedy response… happy hunting! ;)
@ald6686
@ald6686 Жыл бұрын
Thanks for your speedy response… happy hunting! ;)
@cheemsdollarsinternational5172
@cheemsdollarsinternational5172 3 жыл бұрын
Hi, Thank you so much for the great demonstration!!! hope you will make more videos !!! and I also have a question !!! I m going to make a coil with 50 cm diameter , 400 uH coil ! And I m going to use a 0.50mm diameter copper wire (24 AWG) but the coil calculator in circuits.dk ask to use a 0.54 mm diameter coil instead of 0.50mm but it is the only size I can buy from the market will that make any effect to the performance ??? it would be great if you can help !!
@SurfDetector
@SurfDetector 3 жыл бұрын
Use the coil calculator on the Geotech Forum, it will be simple for you to calculate the coil.
@cheemsdollarsinternational5172
@cheemsdollarsinternational5172 3 жыл бұрын
@@SurfDetector Thanks my friend !!!
@cristianomaker
@cristianomaker 5 ай бұрын
Good video! What inductance and dumping resistor you used for the Mini Pulse Plus? Thanks!
@SurfDetector
@SurfDetector 5 ай бұрын
I think that the inductance of the coil was about 400uH if I remember correctly. The damping resistor should be calculated as I show in my video. kzbin.info/www/bejne/eaOtZqd8e9KKr9E
@cristianomaker
@cristianomaker 5 ай бұрын
@@SurfDetector thanks!
@mattrowe1229
@mattrowe1229 3 жыл бұрын
did you solder the ends of the coil wires to the wire feed that runs up to the control box, and, does it interfere or does the coil detect that joint since it is in almost the center of the field, or does the shrink tube block it.
@SurfDetector
@SurfDetector 3 жыл бұрын
Hi Matt, I seem to recall you asking me this before at some point. Yes, the wires are soldered in the coil enclosure, the solder joint is not detected, it is a very tiny joint and is moving with the coil. Are you making a new coil?
@mattrowe1229
@mattrowe1229 3 жыл бұрын
@@SurfDetector yes, the one i mad for the surf pro is not working very good, or its the detector itself. it can detect a metal 2 inch tape measure at 2 inches
@SurfDetector
@SurfDetector 3 жыл бұрын
Hmmm, two inches is not good at all. What are the inductance and resistance of the coil?
@mattrowe1229
@mattrowe1229 3 жыл бұрын
@@SurfDetector yes, especially for a 2inch square tape measure LOL. the ohms are 1.1, and the inductance is .318, used 22awg 300 volt ptfe coated 7 strand hookup wire., removed some of the wire, and it now reads .208 mh and .9 ohms, same wire, specs that came with board said about 230mh. but new coil is not wrapped tight like the other one was.
@mattrowe1229
@mattrowe1229 3 жыл бұрын
@@SurfDetector i took the wire off and put it back on the form but now its to small for the shell, so im going to have to wind again, but this time it came out at 0.9 ohms, and .208mh, the build doc said 230 mh, but my wire wasnt tight yet, so illl make another, you think stay with the build doc at 230mh, or go with 300 mh, i used less turns to lower mh
@richardwestin3331
@richardwestin3331 2 жыл бұрын
Are all pulse induction coils compatible with a given PI detector? I have a PI detector and I want to build a large coil. How do I know it will work?
@SurfDetector
@SurfDetector 2 жыл бұрын
You need to match the inductance and resistance of the coil to the particular detector
@antonioschum
@antonioschum 3 жыл бұрын
How to build pulse induction metal detector with ground balance?
@SurfDetector
@SurfDetector 3 жыл бұрын
Not an easy subject, here is some information: www.geotech1.com/forums/attachment.php?attachmentid=27799&d=1388859885
@silentgaming9328
@silentgaming9328 3 жыл бұрын
sorry for the stupid question but what will happen if i dont put the plastic tube and the mesh wire on it for shielding?
@SurfDetector
@SurfDetector 3 жыл бұрын
Your coil will be essentially worthless
@meguellatisabrina5631
@meguellatisabrina5631 3 жыл бұрын
Hi, that's a one good useful channel. Which formula do you use to design the inductor ?
@SurfDetector
@SurfDetector 3 жыл бұрын
Hello, Welcome to my channel. Use this coil calculator, it works very well. www.geotech1.com/forums/showthread.php?17909-Coil-Calculator Please subscribe, I have many more videos coming soon.
@meguellatisabrina5631
@meguellatisabrina5631 3 жыл бұрын
@@SurfDetector thanks a lot!
@mehdibeverlyhills807
@mehdibeverlyhills807 3 жыл бұрын
Hi from persia I dont know why my metal detector has voice in eveywhere of mountain?! 🤔🤔 It has voice when coil getting near on ground
@SurfDetector
@SurfDetector 3 жыл бұрын
Hi, Thanks for watching my video. Please subscribe to my channel. What detector are you using? Does it have Ground Balance?
@SurfDetector
@SurfDetector 3 жыл бұрын
Is your coil shielded?
@Golddustdetector
@Golddustdetector 4 жыл бұрын
Nice to see your video . i want to build big coil for sdc 2300 40"×20" .pl can you tell me the gauge & how many tons i can use . actualy in india no nugget found they manupulet me & big money loss of me so i decided to make coil . so pl tell about precutaion & information thanku.
@SurfDetector
@SurfDetector 4 жыл бұрын
Hello and welcome to you, I am not familiar with the Minelab SDC2300. The coil needs to be matched to the detector so first you need to know the proper inductance value of the coil that will match to the detector otherwise it will not work properly for you. You need to know the uH before you can build the correct coil. Cheers
@Golddustdetector
@Golddustdetector 4 жыл бұрын
@@SurfDetector uh meaning please?
@SurfDetector
@SurfDetector 4 жыл бұрын
@@Golddustdetector Hello Jay, uH is microhenries
@silentgaming9328
@silentgaming9328 3 жыл бұрын
@@Golddustdetector I am an Indian too. First of all, never get into metal detecting if you hope to get gold nuggets. Its just a fun hobby. And making a coil requires hardwork, i would suggest to buy a coil since you have a good detector to use it at its max potential.
@MultiSportOne
@MultiSportOne 3 жыл бұрын
how many turn you make
@SurfDetector
@SurfDetector 3 жыл бұрын
Hello, Welcome to my channel. Use this coil calculator, it works very well. www.geotech1.com/forums/showthread.php?17909-Coil-Calculator
@aonjon7529
@aonjon7529 8 ай бұрын
What about using .37 mm wire?
@dougmiller2937
@dougmiller2937 Жыл бұрын
Does the mesh tape effect the sensitivity much?
@SurfDetector
@SurfDetector Жыл бұрын
When considering performance in the field not on the test bench the shielding helps much more than it hinders
@مجيدوحيد-ذ8ق
@مجيدوحيد-ذ8ق 3 жыл бұрын
Thank you,24 awg witch is in how mm
@SurfDetector
@SurfDetector 3 жыл бұрын
Here you go my friend www.elandcables.com/the-cable-lab/faqs/faq-what-is-the-conversion-between-awg-and-the-metric-system
@مجيدوحيد-ذ8ق
@مجيدوحيد-ذ8ق 3 жыл бұрын
@@SurfDetector thank you very much
@SurfDetector
@SurfDetector 3 жыл бұрын
@@مجيدوحيد-ذ8ق Please subscribe my friend
@مجيدوحيد-ذ8ق
@مجيدوحيد-ذ8ق 3 жыл бұрын
@@SurfDetector i did
@SurfDetector
@SurfDetector 3 жыл бұрын
Many thanks my friend. I have more videos coming soon
@egghead2687
@egghead2687 4 жыл бұрын
G'day from Australia, i have no electrical training but i have an interest in building my own coils specifically to suit a minelab. I recently bought a multimeter and i want to learn to read the inductance of my current coils that i have. I specifically want to know how to read DD coils, as there are 5 pins, could you be kind enough to point me in the right direction, of course if you have experience with the DD's?
@SurfDetector
@SurfDetector 4 жыл бұрын
Hello Mate, In order to read inductance you will need an LCR meter. These are readily available and the price is not too dear. I recommend that you purchase the book "Inside the Metal Detector" that will get you started with understanding the inner workings and it has a good section explaining PI machines which are where my interests lie predominately. There is a very good section on how to build a DD coil in the book as well. I have plans to produce a video on a DD build but not in the near term as I have too many irons in the fire at the moment. Thanks for watching my video and please subscribe.
@egghead2687
@egghead2687 4 жыл бұрын
@@SurfDetector Thanks for your reply buddy, LCR meter, have been reading on the Geotech site, but never actually heard of that, funny hey?, my interest is in building a very large DD coil like + 30in, the biggest obstacle at the moment would be the housing, would fibreglass work, it would probably be to bloody heavy, but thought i'd throw it past ya? And i know these coils have to be nulled or something like that, what meter would you use for that, or would you use a oscilloscope for that?
@SurfDetector
@SurfDetector 4 жыл бұрын
You can use either an oscilloscope or you could use a good voltmeter. A mono coil would be easier to build at that large size and you could house it in PVC pipe. KZbin doesn't seem to be notifying me of new comments so sorry about the delay in replying.
@egghead2687
@egghead2687 4 жыл бұрын
@@SurfDetector Yeah mate; know all about youtube and not getting replies,i am from Australia so my interest is in building a large DD to use on my old SD, the highly mineralised soil in the goldfields causes to much false signals using a mono, a 14in mono gives me enough trouble , no way will i be digging 4 ft holes for a false signal, do you know how hard this ground is? have dug at least 3 - 3ft holes for rusty metal, and each hole took a good couple of hours to dig, bloody hard work, this is what i bought it is a " Professional Waveform Multimeter MT8206", it says it is a multimeter and oscilloscope 2 in 1, would this be good enough? and it has the resistance and capacitance measurement but not induction so looks like i will have to buy an LCR meter. Can you just explain to me why the DD coil has 5 pins, when there is only 2 wires, is the 3rd pin the ground or neutral, or whatever it's bloody called. A large 3D printer could probably print out a casing but not to sure if they are really common and plus you would need to have a design made up first in a specific computer program, Nexus makes carbon fibre coil housings but the bastard wants between 3-4k for his coils, i told him where he can shove it, sorry i babbled on a bit here, will keep it must shorter next time if any!!
@SurfDetector
@SurfDetector 4 жыл бұрын
@@egghead2687 A DD coil is comprised of two separate coils, one is Transmit (TX) the other is Receive (RX) so there are 4 wires for the two coils. The 5th pin is most likely the shield.
@silentgaming9328
@silentgaming9328 3 жыл бұрын
which diameter wire would you recommend me for baracuda?
@SurfDetector
@SurfDetector 3 жыл бұрын
I use #24 AWG magnet wire normally. Tinned, stranded, PTFE coated wire is better but very expensive.
@silentgaming9328
@silentgaming9328 3 жыл бұрын
@@SurfDetector okay thanks
@SurfDetector
@SurfDetector 3 жыл бұрын
@@silentgaming9328 I saw that you had another question about checking inductance etc., but it has disappeared. I use a LCR tester. The one that I have currently I did a video on.
@silentgaming9328
@silentgaming9328 3 жыл бұрын
@@SurfDetector okay thanks . I dont have an lcr but will go with accurate winding with an online calculator
@silentgaming9328
@silentgaming9328 3 жыл бұрын
And yeah the ptfe stuff is expensive, guess I will go with 24awg magnet wire
@nollanzeller2228
@nollanzeller2228 2 жыл бұрын
what is the size of wire and how many turns ..thank you so much
@SurfDetector
@SurfDetector 2 жыл бұрын
Hello my friend, 24AWG and 24 turns. I tell all the information in the video.
@waseemAkram-oq9vg
@waseemAkram-oq9vg 11 ай бұрын
Sir diameter of round
@MrGeraldino250
@MrGeraldino250 4 жыл бұрын
Hi where get Coil housing?
@SurfDetector
@SurfDetector 4 жыл бұрын
Ola, Yo compre la carcasa de la bobina de dfbowers en el Geotech Forum. Gracias por mirar y yo espero que te suscribaas.
@MrAndreapas79
@MrAndreapas79 4 жыл бұрын
hi which kind of cable you use to connect coil to PI circuit? coaxial cable or something different? which is the best cable?
@SurfDetector
@SurfDetector 4 жыл бұрын
Hi Andrea, Welcome to my channel. I hope that you will subscribe. I use Canare DA202 cable for all of my coils. Thanks for the comment :) Happy Hunting.
@MrAndreapas79
@MrAndreapas79 4 жыл бұрын
@@SurfDetector hi thanks for your answer. Yes i subscribed.. ;).. I check this cable, It gas two cable and shield. Do u connect the two cable with coil leads? And cable shield? U dont connect It?
@SurfDetector
@SurfDetector 4 жыл бұрын
@@MrAndreapas79 HI, You connect the shield and only one of the other wires.
@MrAndreapas79
@MrAndreapas79 4 жыл бұрын
@@SurfDetector for now i ve coil with two lead and shield. The coil shield is connect with One coil lead. Now i need cable to connect coil to Pi circuit, the cable that u suggest have two wires and One shield. I must connect also cable shield to One wire? Sorry but i dont understoud Really well
@SurfDetector
@SurfDetector 4 жыл бұрын
Good morning, Yes I understand that it is a little confusing to try and explain without a picture. Let me try again. For the coil, you have 2 leads and a shield. You should take a short piece of wire and solder it to the shield. Then you connect that short wire to one of the coil wires. For the cable you have a shield, you connect this to the coil shield splice that you just made. Now you have the two remaining cable wires that are twisted together, cut one of them off. You only use one of them and you connect it to the last coil wire. For the cable connection to the PCB, the cable shield will connect to earth (ground) I hope that isnt too confusing. Let me know. Maybe I could do a short video.
@theworldofelectronics9913
@theworldofelectronics9913 4 жыл бұрын
Should 12 volt electricity come out of the disc outlet?
@SurfDetector
@SurfDetector 4 жыл бұрын
With the coil attached you will generally have a pulse of approximately 12V followed by the flyback voltage which can be in the hundreds of volts. Thanks for the question and I hope that you will subscribe to my channel. Cheers
@theworldofelectronics9913
@theworldofelectronics9913 4 жыл бұрын
@@SurfDetectorThanks my friend for the answer
@theworldofelectronics9913
@theworldofelectronics9913 4 жыл бұрын
@@SurfDetectorHow to connect the screen with the device
@SurfDetector
@SurfDetector 4 жыл бұрын
@@theworldofelectronics9913 You are welcome
@SurfDetector
@SurfDetector 4 жыл бұрын
@@theworldofelectronics9913 What detector are you working on? Are you asking about the cable connection to the PCB? Thanks
@ha.farz.2953
@ha.farz.2953 3 жыл бұрын
Hello Dear surfDetector. In the video, you connected a separated wire to scotch24 and then the wire is connected to to ground-wire of coil?!
@SurfDetector
@SurfDetector 3 жыл бұрын
Hello my friend. Have you subscribed to my channel?
@SurfDetector
@SurfDetector 3 жыл бұрын
In the mono coil you solder a wire to the scotch mesh, and then this gets soldered to one of the coil wires then you take them and solder them both to the shield of the cable that goes up to your detector.
@mattrowe1229
@mattrowe1229 4 жыл бұрын
do you have a video of you using this md, i belong to the geotech forum and was looking at the MPP rev E also. but i want to use it in Az desert, so i need a ground balance mod, how small can you find an object
@SurfDetector
@SurfDetector 4 жыл бұрын
Hi Matt, This coil is actually for my Barracuda. I have not yet packaged up my coil for the MPP+ as I am waiting for the shell to arrive so no video yet. More to come. Cheers
@mattrowe1229
@mattrowe1229 4 жыл бұрын
@@SurfDetector I subscribed to your channel, ill keep checking back, i would probably need a ground balance mod to the mpp to make it work right in the Az soil here, or at least a DD coil, Had a guy build the MPP revc-d modwel and uses his MXT instead in Az, but i am after sub-gram nuggets all so
@SurfDetector
@SurfDetector 4 жыл бұрын
@@mattrowe1229 You should check out the posts by KRinAZ on the Geotech forum he has modified his MPP+ for exactly what you want it for. I believe that he is a prospector in AZ. My machines are only tuned for the water which is where I do my detecting. Happy Hunting and thanks for subscribing.
@mattrowe1229
@mattrowe1229 4 жыл бұрын
@@SurfDetector Already talked to him, he does not use his MPP even with the mods in the desert, does not work good enough, he uses an MXT vlf with a DD coil and works better, i have been reading 2 threads on people trying to come up with a GB function yet, and they are close, but not done yet, maybe a DD coil for the MPP
@musaameril7067
@musaameril7067 3 жыл бұрын
How many cm its diameter and also its turns sir?? Thanks...
@SurfDetector
@SurfDetector 3 жыл бұрын
Hello, All information is given in the video my friend, I tell step by step how to make it. 24 turns and 9"
@SurfDetector
@SurfDetector 3 жыл бұрын
9 inches is good.
@marcialblanco6765
@marcialblanco6765 3 жыл бұрын
Good
@SurfDetector
@SurfDetector 3 жыл бұрын
Welcome to my channel. Please subscribe.
@rezatavan5048
@rezatavan5048 6 ай бұрын
❤❤❤
@gtxsatria2010
@gtxsatria2010 3 жыл бұрын
Nice Brother
@SurfDetector
@SurfDetector 3 жыл бұрын
Thank you for watching my friend.
@waseemAkram-oq9vg
@waseemAkram-oq9vg 11 ай бұрын
Sir depth
@SurfDetector
@SurfDetector 11 ай бұрын
That depends on what detector you are using and the target type and size
@johnmiller4750
@johnmiller4750 7 ай бұрын
The knife will interfere with your measurements any inductive material near it including nails pins etc will skew results
@SurfDetector
@SurfDetector 6 ай бұрын
I think that for the purposes of the video the setting is acceptable. Thanks for watching.
@22koga
@22koga 3 жыл бұрын
This is why I asked if there was a capacitor in-line you went from it winded to finished never showing how it’s connected to the detector or what’s under the heat shrink you have the only videos on this and I’m so glad you took the time to do them and I know you love your tripod but in future videos could you show how you do your wiring so dumb asses like me can understand you have built numerous detectors and just knowing what you use helps a ton type of wire from the detector to the coil shit I copied most of the parts on your board
@SurfDetector
@SurfDetector 3 жыл бұрын
I will be doing another coil video sometime in the near future. I will endeavor to show more detail although most people only watch videos for 90 seconds or less.
@22koga
@22koga 3 жыл бұрын
@@SurfDetector the length is fine it’s more not moving the camera around to show where all those wires and clips where going to and thanks again for taking the time to make them
@محترفينتنيقبالأثار
@محترفينتنيقبالأثار 3 жыл бұрын
...
@SurfDetector
@SurfDetector 3 жыл бұрын
Hi, Did you have a question?
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