one of the best electronics I have seen so far !!!!!without hiding the secrets..congratulations I would like to buy some electronic circuit from you!!!!!
Thanks to your easy-to-understand instructional videos, my project was about 95% successful. Unfortunately, I don't have an oscilloscope, so I can't adjust or check the Sampling etc. of IC4 and PR2 and 4011. But I can somehow feel that it is working. I don't see any unstable elements. I am very grateful for your video and your helping reply.
I am happy to make these videos to help others. Maybe you should consider making one of these oscilloscope kits? I did a video here: th-cam.com/video/iBLUsbhU-7A/w-d-xo.html
@@SurfDetector Hello please, I need help. I made a pi polones, but I encountered a problem. The device does not work until I put my finger on the bc327 transistor T3. When I remove my finger, the device is silent, but unfortunately, I do not have a tracking instrument. Please, are there any suggestions?🙏
Hello, I enjoyed watching your work. I only have 2 questions. 1- How did you adjust the trimpots? according to what? How did you set it? Can you write in detail? 2-What is the thickness of the coil wire in mm? What is the coil diameter? How many turns did you wrap the wire? Thank you very much in advance for your answers. By the way, I use translation. :)
Hello Andrea, You should be fine using either x10 or x100. If you want to look at the coil flyback you can also just clip your probe around the insulation on the TX coil lead and the scope will read through the insulation.
Hi sir, my pi plones was working good, but today it stopped working.irf630 is soo hot.i have chamged it but nothing changed.i neef yor experienced, what is the problem.i use 32 cm coil, 2.2 ohm and 285mH..
Thanks, nice video. I made this Polones to, and wanted to compare it to the allot more simple Russian pirat detector. I noticed that this was a bit better and more sensitive, for example i could detect a coin at 25 cm max, and on the pirat about 20 cm (same coin). This circuit then is allot more complicated then the Pirat. But i think it is worth the extra job.
A better circuit than the Polones would be the Mini Pulse Plus. You can see my build videos on my channel and get all of the information on the Geotech Forum.
@@SurfDetector that one i would like to try, i found i could buy circuit board from Uk, i live in Sweden so maybe possible. If i had the layout for it i can make it, and ofc the circuit :) thanks again. And if you got the circuit and circuit board layout i would be happy :) take care my friend
sus videos en los cuales explica se entiende muy bien , mi proyecto va en un 80% . pero lo malo de esto es que no cuento tengo el equipo para y no puedo ajustar o verificar el. de IC4, PR2 y 4011. no se si funcionara porque al no tener un osciloscopio, no conoceré la frecuencia del oscilador.
Hi sir, thanks all..I have a simple problem but important for me.Its about cable between coil and dedector.Can we use dish antenna cable...if not what we can use..
Hello and welcome to my channel. Have you subscribed? You can find the gerber files for this project here: oshwlab.com/jeanfreitas/pcb2-placa Be aware that there are errors in this circuit as I mention in the videos.
@@Harman___732 Go to the Geotech Forum and look at the PI projects there. The forum has all of the information to build several good PI projects that are better than the Polones. Many of those projects I have done step by step videos for.
As I said in my reply earlier there are many factors that influence the sensitivity. What Op-amp did you use for example? Unfortunately this detector uses the LF357 which is a part that is counterfeited many times.
Thank you for watching. You are not going to see much of interest in seeing the pre-amp signal, there is just a deflection in the wave, I have shown that before in my videos.
I think that the Mini Pulse Plus is a better metal detector. That is the one that I recommend to make. The Gerber files are available for free on the Geotech Forum. Please subscribe to my channel.
Hello, my friend, I made Polones, but unfortunately, the sound is the same and the sound does not stop when turning the 10k and 5k sense, what do you think is the problem?
The volume of the sound also works and it increases and decreases, but it does not change the volume of the sound by changing the two, the volume is related to the frequency.
Hello, please help me. I have a Polones metal detector, but it senses metals in reverse. For example, when you bring the metal close to the coil, the sound is cut off. Which electronic component has the problem?
Thank you for this awesome video like always good stuff, i have a question for you, The surf pi 1.2 is better or Polones Polish PI ? looking forward to your next vid on the Polones Polish PI Air test.
Hi, Glad that you are enjoying the videos. I have not yet built a Surf Pi so I cannot answer you on that one. My recommendation for a good PI to build though would be the Mini Pulse Plus Rev E. That is an excellent machine. All details are on the Geotech Forum website.
You are welcome. You should build the Mini Pulse Plus. It is a better project than the Polones. The Gerber files and build document are free on the Geotech Forum.
good day bro. I made this circuit, but when the metal gets close to it, it silences and when it goes away it chirps and the perception is very low. I wonder why?
If it silences when the metal is close that probably means that the frequency of the audio circuit is going to such a high level that you cannot hear it. With an oscilloscope you should be able to see this action.
Hi, I'm Franco from Italy, a new follower. Please could you tell me about the right side of insert of Bf245? In your video it seems rotate of 180 degrees by the pcb design. There's many confusion about the corrispondent right pins "G/D/S" of this fet. Many thanks for all.
Hi Franco welcome to my channel. First I want to say that you should always use a transistor tester to confirm the pins as they can vary from one manufacturer to another. Second, I do not suggest making the Polones. I really do not see why so many people want to build it. The machine is not very stable in my opinion. Check out some of the other Pulse Induction projects that I have videos for. The Crossbow is an excellent machine for example. The Arduino PI is a good one too.
Thanks for your reply. Unfortunately I have made the polones four years ago, without success. Now I want to try to understand the cause of malfunction. It's a fool game! My last chance is get the experience of others. I have a Chinese tester, but it get a wrong response when I tested the Bf245, if I turn the face, the tester changed the corrispondence of pins in illogical way. Perhaps I should made another detector and forget polones... What is your advise for me to make a good one? A model not too much difficult, because I'm not an electronic expert. Many thanks.
@@francocuda3471 Hi Franco. The Arduino PI is a good project to make and there is good documentation on the Geotech Forum. I did a full set of videos for that on my channel.
Hello my friend, You need to go to the Geotech Forum and post your question there along with your schematic and pictures of your PCB. Without seeing your project it is almost impossible to help.
Dear Sir, R8 and C7 are not installed, is there any reason for that? And also, how did you adjust the TRIM5K and TRIM100K? If you would be so kind as to share the details of your setup, I would be grateful.
Hi, I have R8 installed across the coil connection instead of on the pcb. C7 is not necessary for the circuit, I believe that I explained most of these in my #5 video. Please watch the whole series 1-6.
@@SurfDetector I just plugged 2n222 instead of bf245a and now it works a bit smoother. detects a pliers from 15cm. I wonder if the problem could be bf245a?
Most likely the issue is with what you have for a sample delay, or how you built your coil. Without seeing the pcb in front of me or some oscilloscope shots it is almost impossible to diagnose remotely.
Sorry my friend I do not sell any PCB. The Mini Pulse Plus is a better project than the Polones. If you go to the Geotech Forum you can get all of the information.
@@lp1151 You will not get the correct gain if you do not use the LF357. Go to the Geotech1 Forum and build the Mini Pulse Plus. It is a better project.
I used a 200k on that PCB. A better machine is the Mini Pulse Plus. I did many videos for that project and the gerber files are free to download, it is a better project I think. Thank you for subscribing, I have more videos every week.
You need to know many things about your machine: What is the TX pulse width What is the sample delay width What is the Sample pulse width What is the coil inductance and the damping resistor values Did you use a real LF357 Op-amp There is no easy answer here, there are many factors to investigate and you really need an oscilloscope to do it properly.
Hello my friend. First I must ask you, have you watched all 6 videos that I did on this project? Many people only watch the last video and miss all of the information in the other five. Here is the link to the PCB that I used, as I say in the videos, there are mistakes on this project so be careful: easyeda.com/jeanfreitas/pcb2-placa
This detector is for used at the beach to find rings and coins, I would not use it for finding tiny nuggets of gold my friend. Most of my videos are for making detectors for use at the beach. Here is the PCB and schematic for the Polones:easyeda.com/jeanfreitas/pcb2-placa
Sir im srilankan our county lot of old treasur mark but i identify exactly underground treasur your.thes circuit is goog i have brought your circuit please give me your phone numbers thanks for you
Hello, I enjoyed watching your work. I only have 2 questions. 1- How did you adjust the trimpots? according to what? How did you set it? Can you write in detail? 2-What is the thickness of the coil wire in mm? What is the coil diameter? How many turns did you wrap the wire? Thank you very much in advance for your answers. By the way, I use translation. :)
one of the best electronics I have seen so far !!!!!without hiding the secrets..congratulations I would like to buy some electronic circuit from you!!!!!
Hello my friend. Thank you for watching my videos. I am glad that you are enjoying them.
Thanks to your easy-to-understand instructional videos, my project was about 95% successful. Unfortunately, I don't have an oscilloscope, so I can't adjust or check the Sampling etc. of IC4 and PR2 and 4011. But I can somehow feel that it is working. I don't see any unstable elements. I am very grateful for your video and your helping reply.
I am happy to make these videos to help others. Maybe you should consider making one of these oscilloscope kits? I did a video here:
th-cam.com/video/iBLUsbhU-7A/w-d-xo.html
Thankyou for sharing your experience and knowledge with us. Very much appreciated. Cheers from Michael. Australia.
Hello Michael,
I thank you for the nice comment and also for watching my videos. I will be starting on a new Pulse Induction project soon.
Cheers
@@SurfDetector look forward to seeing that new video. 😀. Cheers from Michael. Australia.
Can I buy it?
Thank you for sharing this amazing videos i really love your videos
Next week i will start building this pulse induction metal detector
Hello Bilal,
I am happy to hear that you will be building the Polones. It was a fun project.
@@SurfDetector Hello please, I need help. I made a pi polones, but I encountered a problem. The device does not work until I put my finger on the bc327 transistor T3. When I remove my finger, the device is silent, but unfortunately, I do not have a tracking instrument. Please, are there any suggestions?🙏
@@bilalhajji9473 Bilal, In order to troubleshoot properly you need an oscilloscope.
@@SurfDetector thank sir 🙏
it really is a very satisfying job.
and we learn from your beautiful work too. thanks for sharing with us👍
It is my pleasure to make the videos. Thank you my friend.
Hello, I enjoyed watching your work. I only have 2 questions.
1- How did you adjust the trimpots? according to what? How did you set it? Can you write in detail?
2-What is the thickness of the coil wire in mm? What is the coil diameter? How many turns did you wrap the wire?
Thank you very much in advance for your answers. By the way, I use translation. :)
Very good! Congratulations from Brazil!!!
Thank you Mauricio for watching.
Hi thanks a loro for tour video are so useful..
To use oscilloscope with coil signal, i need Just x10/x100 probe or i must use another stuff?
Hello Andrea,
You should be fine using either x10 or x100. If you want to look at the coil flyback you can also just clip your probe around the insulation on the TX coil lead and the scope will read through the insulation.
@@SurfDetector that sound great.. thanks a lot
Thank you, very perfect🎉❤
Those small resistors what did you use 1/2 or 1/4 watt?in my pcb no clear instruction of watt of resistor
All 1/4 watt except for the damping resistor which is one watt.
In coil sir theres 2 big resistor 180 and 22k what is the wattage? thanks
@@jackofalltrades1263 I am sorry, without seeing the schematic I don,t know which parts you are asking about. There are no resistors in the coil.
470R r8
That would be the damping resistor which I told you before is one watt.
Hi sir, my pi plones was working good, but today it stopped working.irf630 is soo hot.i have chamged it but nothing changed.i neef yor experienced, what is the problem.i use 32 cm coil, 2.2 ohm and 285mH..
Thanks, nice video. I made this Polones to, and wanted to compare it to the allot more simple Russian pirat detector. I noticed that this was a bit better and more sensitive, for example i could detect a coin at 25 cm max, and on the pirat about 20 cm (same coin). This circuit then is allot more complicated then the Pirat. But i think it is worth the extra job.
i used lf355, though i had no lf357, even a 741 works on that part, but a bit less sensitive.
Good to hear that you enjoyed the video.
A better circuit than the Polones would be the Mini Pulse Plus. You can see my build videos on my channel and get all of the information on the Geotech Forum.
@@SurfDetector thanks i will check it
@@SurfDetector that one i would like to try, i found i could buy circuit board from Uk, i live in Sweden so maybe possible. If i had the layout for it i can make it, and ofc the circuit :) thanks again. And if you got the circuit and circuit board layout i would be happy :) take care my friend
sus videos en los cuales explica se entiende muy bien , mi proyecto va en un 80% . pero lo malo de esto es que no cuento tengo el equipo para y no puedo ajustar o verificar el. de IC4, PR2 y 4011. no se si funcionara porque al no tener un osciloscopio, no conoceré la frecuencia del oscilador.
You really need to have an oscilloscope to build these projects..
Hi sir, you say about trimpot on the original bord 5K but you use 2K..But on the board has W 204..( 200K) which one is real.
Hi sir, thanks all..I have a simple problem but important for me.Its about cable between coil and dedector.Can we use dish antenna cable...if not what we can use..
This is what I used on all of my coils:
Canare DA202 110 Ohm AES/EBU Digital Audio Cable
How to and where to buy this pcb circuit or all components of this circuit ?
I am from India
Hello and welcome to my channel. Have you subscribed?
You can find the gerber files for this project here:
oshwlab.com/jeanfreitas/pcb2-placa
Be aware that there are errors in this circuit as I mention in the videos.
@@SurfDetector i am on a project of PI metal detector, how i make this project without any error.
Can you remove the error of this circuit ?
@@Harman___732 Go to the Geotech Forum and look at the PI projects there. The forum has all of the information to build several good PI projects that are better than the Polones. Many of those projects I have done step by step videos for.
I don't have a rheostat of 200K, what do you suggest I should replace it with. Thank you🥰🥰
Hi my friend,
If you have a larger one you should use that.
@@SurfDetector I have 500k.is it good ?
If that is all that you have then you should try it.
Very good project.
I enjoyed doing this detector. It is very popular it seems.
Hello, please tell me in the bf245 section, what did you use as a replacement and what are the bios resistors?
Sorry, I do not have this detector anymore. All of the information should be included in the video series.
How to increase the sensitivity of the device?
There are many factors that are involved with the sensitivity of the detector:
Coil
Pulse width
Sample Delay
Sample width
Op-amp used
@@SurfDetector
But there are some parts that are responsible for the power of sensitivity, for example transistor bf245 and irf840
@@SurfDetector
But there are some parts that are responsible for the power of sensitivity, for example transistor bf245 and irf840
As I said in my reply earlier there are many factors that influence the sensitivity. What Op-amp did you use for example?
Unfortunately this detector uses the LF357 which is a part that is counterfeited many times.
great job Man 👍👍👍
Thanks for watching.
very nice explanation. if you could show between sample and pre-amp signal transformation when the coil detecting metal objects, it would be great.
Thank you for watching. You are not going to see much of interest in seeing the pre-amp signal, there is just a deflection in the wave, I have shown that before in my videos.
What do you think about ordering to JLCPCB the PCB board data from the link you provided without modifying?
I think that the Mini Pulse Plus is a better metal detector. That is the one that I recommend to make. The Gerber files are available for free on the Geotech Forum. Please subscribe to my channel.
@@SurfDetector Thank you for the replying.
Hello, my friend, I made Polones, but unfortunately, the sound is the same and the sound does not stop when turning the 10k and 5k sense, what do you think is the problem?
The volume of the sound also works and it increases and decreases, but it does not change the volume of the sound by changing the two, the volume is related to the frequency.
Is it possible that the ohm of the coil is high or low? Or is the problem with Isi?
Hello, please help me. I have a Polones metal detector, but it senses metals in reverse. For example, when you bring the metal close to the coil, the sound is cut off. Which electronic component has the problem?
The detector is overloading and the sound frequency is going too high to hear properly. I think that is your issue.
Thank you for this awesome video like always good stuff, i have a question for you, The surf pi 1.2 is better or Polones Polish PI ?
looking forward to your next vid on the Polones Polish PI Air test.
Hi, Glad that you are enjoying the videos. I have not yet built a Surf Pi so I cannot answer you on that one. My recommendation for a good PI to build though would be the Mini Pulse Plus Rev E.
That is an excellent machine. All details are on the Geotech Forum website.
*The TRIM1is it 2k or 200k?
Thanks 😊
I used a 200K
@@SurfDetector i don't have it.
I just have 2k and you said that will be good. Thanks again
You are welcome. You should build the Mini Pulse Plus. It is a better project than the Polones. The Gerber files and build document are free on the Geotech Forum.
good day bro. I made this circuit, but when the metal gets close to it, it silences and when it goes away it chirps and the perception is very low. I wonder why?
If it silences when the metal is close that probably means that the frequency of the audio circuit is going to such a high level that you cannot hear it. With an oscilloscope you should be able to see this action.
@@SurfDetector it just chirps when the big aluminum comes close and all the other metals silence when it approaches. I wonder what should I fix?
@@quadrado360 Have you looked at the signal with an oscilloscope? I do not know why the Polones is so popular, it is not a stable machine.
@@SurfDetector no oscilloscope. Isn't there any other method?
unfortunately when building electronics if you encounter a problem then to troubleshoot it you really need an oscilloscope.
Thank u sir really super project
I am glad that you enjoyed the videos. Please subscribe to my channel as I have much more content on the way with many good projects.
@@SurfDetector hola buena tarde soy de Argentina me pode pasar la lista de los componentes los que usate en tu plaqueta
easyeda.com/jeanfreitas/pcb2-placa
This is the PCB that I used.
@@SurfDetector hola buena tarde amigo gracias por pasarme tu plaqueta esta geñal
How much Frequency work Khz?
I built my Polones to run at 1KHZ. Thanks for watching and please subscribe.
hi. can u send me final file this project?
Hi, I'm Franco from Italy, a new follower. Please could you tell me about the right side of insert of Bf245? In your video it seems rotate of 180 degrees by the pcb design. There's many confusion about the corrispondent right pins "G/D/S" of this fet. Many thanks for all.
Hi Franco welcome to my channel. First I want to say that you should always use a transistor tester to confirm the pins as they can vary from one manufacturer to another. Second, I do not suggest making the Polones. I really do not see why so many people want to build it. The machine is not very stable in my opinion. Check out some of the other Pulse Induction projects that I have videos for. The Crossbow is an excellent machine for example. The Arduino PI is a good one too.
Thanks for your reply. Unfortunately I have made the polones four years ago, without success. Now I want to try to understand the cause of malfunction. It's a fool game! My last chance is get the experience of others. I have a Chinese tester, but it get a wrong response when I tested the Bf245, if I turn the face, the tester changed the corrispondence of pins in illogical way. Perhaps I should made another detector and forget polones... What is your advise for me to make a good one? A model not too much difficult, because I'm not an electronic expert. Many thanks.
@@francocuda3471 Hi Franco. The Arduino PI is a good project to make and there is good documentation on the Geotech Forum. I did a full set of videos for that on my channel.
hi sir , thank you so much , i have problem with the sound it's not working i don't know why , if you can help. thank's again
Hello my friend,
You need to go to the Geotech Forum and post your question there along with your schematic and pictures of your PCB. Without seeing your project it is almost impossible to help.
Dear Sir, R8 and C7 are not installed, is there any reason for that? And also, how did you adjust the TRIM5K and TRIM100K? If you would be so kind as to share the details of your setup, I would be grateful.
Hi,
I have R8 installed across the coil connection instead of on the pcb. C7 is not necessary for the circuit, I believe that I explained most of these in my #5 video. Please watch the whole series 1-6.
@@SurfDetector I am very grateful to you for your kind instructions. I will go find them.
What else can I use instead of lm741
You could try a TL071 but there is no reason not to use the LM741
@@SurfDetector I just plugged 2n222 instead of bf245a and now it works a bit smoother. detects a pliers from 15cm. I wonder if the problem could be bf245a?
Most likely the issue is with what you have for a sample delay, or how you built your coil. Without seeing the pcb in front of me or some oscilloscope shots it is almost impossible to diagnose remotely.
Do you sell pcb for that md?
Sorry my friend I do not sell any PCB. The Mini Pulse Plus is a better project than the Polones. If you go to the Geotech Forum you can get all of the information.
Mantap👍
Terima kasih
sir does it detect gold? Next How many MZH is this device?
All metal detectors if tuned properly will detect gold. This is a Pulse Induction machine.
@@SurfDetector thankyou sir
@@SurfDetector ic lf357 Is there any other change equal to this?
@@lp1151 You will not get the correct gain if you do not use the LF357.
Go to the Geotech1 Forum and build the Mini Pulse Plus. It is a better project.
@@SurfDetector Sir Frequency mhz?
remove the 5k trimpot.
place of 220k, this correct
I used a 200k on that PCB. A better machine is the Mini Pulse Plus. I did many videos for that project and the gerber files are free to download, it is a better project I think. Thank you for subscribing, I have more videos every week.
Thank you
@@SurfDetector How long can be pi polones get metal
What is the best replacement transistor tip 3055
Is this for the Polones? Which schematic are you using?
@@SurfDetector
Hello, my friend, I have a polones device, but the problem does not feel well: a piece of 20 * 20 cm at a distance of 40 cm
@@elhakim9416 That does not sound very good my friend.
@@SurfDetector
Yes, how do I increase the sensitivity of the device, my friend
You need to know many things about your machine:
What is the TX pulse width
What is the sample delay width
What is the Sample pulse width
What is the coil inductance and the damping resistor values
Did you use a real LF357 Op-amp
There is no easy answer here, there are many factors to investigate and you really need an oscilloscope to do it properly.
Thank you plis file pi polones PDF
www.pesadillo.com/pesadillo/?p=9237
Google is our friend.
Good
stability is not good
I do not know why the Polones is so popular, it is not a stable machine. Try the Mini Pulse Plus. Please subscribe.
Hello!! Sir can you share its diagram and part lists. Please. Thanks god bless u
Hello my friend. First I must ask you, have you watched all 6 videos that I did on this project? Many people only watch the last video and miss all of the information in the other five. Here is the link to the PCB that I used, as I say in the videos, there are mistakes on this project so be careful:
easyeda.com/jeanfreitas/pcb2-placa
@@SurfDetector thank you sir, maybe only 3 vdeos i watched.
You are welcome my friend. Please subscribe and also watch my other metal detector projects. The Mini Pulse Plus is a better project than the Polones.
@@SurfDetector can u send me its Link brother. Thanks
Already done to subscribe brother
I need pcb .
This is the PCB that I used, just keep in mind the errors that I point out in my video series.
easyeda.com/jeanfreitas/pcb2-placa
كم يصل عمق هذا الجهاز
It all depends on what you are looking for my friend. The Mini Pulse Plus and the Crossbow PI are both better projects than the Polones.
@@SurfDetector شكرا
You are welcome my friend.
Cmplet video show now
Thank you for watching, the Polones is very popular, however there are much better detectors to build.
@@SurfDetector how many rs for your only sarket plz bcoz i need that sarket
@@AynaeChitral I am sorry but I do not understand what your question is.
@@SurfDetector how many prize is your that machine only curket???
I am sorry my friend but I do not understand what you are saying.
alsalam ealaykum warahmat allat wabarakatuh ya 'akhaa alkarim 'ana eindi mushkilat waitmae fi almusaeidih fi hulih laqad qumt bisine aljihaz walakan eind tawsil tarafan almilafi yaqtae alsawt fama almushkilat walak kl alshukr waltaqdir ealaa altaewan
Welcome and thank you my friend.
Please can you help me make this device?
My videos show exactly what you need to do to make it my friend. I make the videos to help.
Thank you for your high humility How far does the device reach, and can it search for raw gold, please, please give the original scheme
This detector is for used at the beach to find rings and coins, I would not use it for finding tiny nuggets of gold my friend. Most of my videos are for making detectors for use at the beach. Here is the PCB and schematic for the Polones:easyeda.com/jeanfreitas/pcb2-placa
Sir im srilankan our county lot of old treasur mark but i identify exactly underground treasur your.thes circuit is goog i have brought your circuit please give me your phone numbers thanks for you
Hello my friend and thank you for watching my videos. Please subscribe and share with your friends.
Sur,can you send to me the files in my gmail,special pi polnes .pls
Hello Majid,
Please subscribe my friend. Here is the schematic:
easyeda.com/jeanfreitas/pcb2-placa
hola saludos desde Mexico, tiene email
Hello, I enjoyed watching your work. I only have 2 questions.
1- How did you adjust the trimpots? according to what? How did you set it? Can you write in detail?
2-What is the thickness of the coil wire in mm? What is the coil diameter? How many turns did you wrap the wire?
Thank you very much in advance for your answers. By the way, I use translation. :)