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Hi sir, i made one polones pi dedector.its working.But i see in this video the resistor behind mosfet, 470r...mine is 180 r...my mosfet is irf840..my coil 1.6 ohm and 0.26 mH...if i put 470 r what happens..

Hi sir, what is diameter the coil in this video...And , when you try was it good ?

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..

Excellent ❤❤❤

Hello, I was searching about different videos on metal detectors when i came by your channel. It's amazing work that you've done here. I'm trying to build a mine detecting and collecting robot as a project. To do so i have to incoperate a metal detector. Could you please recomend a metal detector that would be easy to recreate and would not need much testing while assembling. Thanks.

Good video! What inductance and dumping resistor you used for the Mini Pulse Plus? Thanks!

thank U Alec . can u tell me the value of Rd ?

Where I might order the pcb please. I ordered the book Amazon Germany. I will get the parts form Germany. Thank you.

Hello sir ❤

Your instructional videos made my project a success. Thank you very much. This PI metal detector got a distance of 5m with a 1mx1m search coil.　 th-cam.com/video/tjyJKxQiQYE/w-d-xo.html

Hello please circuit diagram discrimination pi detector ❤❤❤

Ok❤❤❤

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Excellent ❤❤❤

Excellent ❤❤❤

Excellent ❤❤❤

Excellent ❤❤❤

I like what you’re doing.❤

Truly master ❤

Excellent demonstration! I hope you did not abandon this hobby

Honestly, you lost me or confused me when you spoke of using the o-scope probe from channel 2 to connect to the breadboard jumper. Because you then said you weren't using channel 2 of the scope... So I've lost you regarding your connections. I mean, if you're not using the scope's Ch2, then what do you have that probe connected to? In short, I'd like to see the actual connections from the breadboard to your scope. I think I understood what your connections to the SFG, but to be perfectly clear, it wouldn't hurt to see that connection loop in more detail as well. I'm a novice and do have a scope and SFG, so this may seem to be an unnecessary question to most, but to me, it's pretty important. Thanks for the vid! Rich

hello, i can't afford a professional oscilloscope so i need your advice, if dso 152 mini oscilloscope is good to do this job with?? , thank you very much that was great job , may god save you and your family 😊

The knife will interfere with your measurements any inductive material near it including nails pins etc will skew results

Although less sensitive than the P.I Delta Pulse 2 and heavier this is a very good V.L.F one. It has a perfect stability and gives a nice sound. It's to be made. I was about to give up thinking that there was an error in the diagram i couldn't find out when i caught the culprit who prevented it from working from the beginning . A short strap that detached in the inside from the weld.

Insanely helpfull, especially on the software interface. Thank you.

Whats the advantage of this compared to the Voodoo (with the Arduino mod)?

why do i have the urge to make a "short video" on programming a pic manually? long ago one could program them with a relatively simple circuit, on the parallel/serial ports... and thats only a small step from manual. always sort of wanted to try it... just need a bunch of switches. and some time. the hexfiles all translate to binary opcodes... fairly straightforward.

What about using .37 mm wire?

Kalo pengen lebih dalam gimana cara nya serr

I want to ask you about, crossbow and hammerhead, which one better? And, are they deferent? Or the same by schematic

I know little about electronics, but want to build a few things, one being a metal detector, the other is A dc motor controller, simple throttle for the motor capable of about 500 amps ,and a inverter in the 8-16kw range, but the detector i really want to experiment with it, maybe try using brute force maybe use a inductor to boost the voltage until the coil is getting hit with 600+ volts at a few 100 ma. And possibly look into using a micro controller to scan the curent and voltage of each pulse, to possibly see when metal is in range of the coil, and Maybe do frequency sweeping do a few pulses at was each frequency group say 4khz, 4.5, 5, 5.5, 6, 7, 8,10, 15, 20,25, 30, 40,50,60, 65, 70, 75, 80khz, and the display being a small ocilliscope, maybe a two channel like the cheap hand held scopes, one channel connected to the pulse current for a transmitted signal, and a recieved signal. It should be able to show when metal isin the area, possibly before you can hear a difference in sound, depending on the signaling type, id like to use a secondary signal generator, to ptoduce a lower frequency signal that is always running when its on, bit thr input to the audio amp is blocked by fet and the microcontroller sensing the difference in current draw when metal is near the coil , and maybe send the return signal to the audio smp also, so it can be heard. Maybe a user can switch between the two. I want to experiment with all this stuff, maybe not all at once. I also thought about for large search areas for deep search, maybe a large steel tube can be e driven into the ground in be a grid pattern the tube havinga coil inside basically magnetizing the earth around the tubes basically a 1.5" tube a couple feet long or so, with all running at the same frequency. Then a search coil ran over the area between the stake coils, if there is anything even small gold it should start ringing between pulses from the emitters the field from the emitters would need to be studied see how large they are, what the reach is, keep them close enough to prevent blind areas. Possibly a 48" on center grid using about 12 emitter stakes . With them being 24"below ground ,they should reach atleast 30" with the reciever only receiving when there us no signal emitted, there should be only targets and possibly the receiver using multiple coils to make targets easy to locate. Possibly use low power laser and fiberoptics to illuminate the search coil/,reciever in the area of the coil recieving the signal from the target. And use colours for possible Material id. Red for possible iron, blue for possible gold, copper, aluminum, and lead, and did i mention GOLD! Hopefully i should sound on sub picker gold targets, (fly turds) especially if the soil is good snd there is multiple targets. Its just sn idea i wanted to play with, don't know if anyone would be interested if it did work! If a small auger could be used to drill a 4'+ hole on a 4' center grid. And drop in a 36" long emitter coil in a tube. The flux field should be large, it should be one large alternating field, causing eddy currents in all the metallics in the area. Maybe it would require a bit of shielded cable, going hole to hole, to a main box, then to the reciever. It sounds expensive, rven if you build it yourself.. if it found anything metal big enough to see with thr the average eye , at half arms length. Maybe it would be worth it. Especially if you could desrc a few acres a day with it. Going over 4' deep.. KRAXY IDEAS, I KNOW, BUT MAYBE IT CAN WORK, OR ATLEAST SPARK A BETTER IDEA!!

Thank you. Can I use it for a dsp3010 pic too?

I forgot what sketch I used in my arduino nano. Haw can I get the nano to display the sKetch that is loaded into it?

Hi mr alec areYou don't want to build a VLF detector like quazar or furton?

Dear surf detector I have a very interesting coil project I’m planning on doing but I am very lacking in expertise would love to get a few pointers if you don’t mind. I just need to send you the info please advise on how to reach you sincerely J.P

Does the spider coil work with Voodoo?

Apakah orang yang tidak tau bisa membangun alat itu dengan komponen sesuai yang ada di papan pcb nya

Hello ,iam sorry i forgot your name,i just contacted the seller of this PCB on eBay,i asked him if i can use it to detect gold on the beach or mines he directed me here haha 😂 which I am already subscribed.so i would like to know where is the rest of the videos to assemble the Pcb ,also the guide paper you reading does it come with the pcb from eBay? Thank you very much.

Very wise man

Sir depth

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. :)

hi. can u send me final file this project?

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. :)

Hi Why did you choose 500hz?? What is your duty cycle?

Hi, thank you for excellent videos, Is this circuit powerful than polones? What is the maximum depth that can this circuit search under ground?

Hi First of all i want to thank you for your videos, I want to make a coil that i can search up to about 3 meters using polones How should i make this? I cant calculate the diameter of coil and number of turns and ohm and inductance Can you help me?

Hello, please tell me in the bf245 section, what did you use as a replacement and what are the bios resistors?

Hi, i made a polones detector and it worked good as in your great videos, but it doesn't detect gold and can't distinguish between gold and other metals, do you know a detector can detect gold? Please make a video as your previous videos, Thanks a lot for your channel,

Where can I get an electronic board?

How much is the diameter of the coil? What you made on this video, works for polones detector?