Building a metal detector & how does it work
ฝัง
- เผยแพร่เมื่อ 7 ก.ค. 2021
- Today, let's build a simple metal detector using a donated DIY metal detector kit. It detects metal objects as they reduce the feedback in a simple oscillator. The detection coil is integrated into the PCB board and it's a part of a single transistor oscillator. Metals will reduce the coupling, leading to an amplitude drop, which is detected using another two transistors and indicated by a buzzer and an LED.
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"Let's solder horribly... Because it's more fun" 😂😂
I came here to post exactly the same quote but you beat me to it! Classic DGW.
Hide the children's eyes 😂 Now let's use half a can of PCB cleaner to remove the rosin 😊
I came here for solder .
Even more rosin!
*Then add salt*
@@agustinusreynaldi7101 "salt" I rolled off 🤣
*Now, put some peppers*
You could use your new metal detector to find your thin solder wire!
Lol, really! What a brilliant advice!
Not too big enough, he need to make a big one to find it.
,😅😅😅
😂😁
No matter how old we get, these kits will always be fun :)
I'd say, they even can get more fun.
Also some DIY things
*Especially power adaptors*
'Even more rosin' of course, bench top wave soldering at its best with the bonus of self levelling conformal coating providing a robust anti corrosion layer that can prevent the ingress of most hazardous materials with the benefit of higher structural strength in both compression and shear resulting in reducing the need for more salt....I'm looking forward to your detector design....cheers.
Your 'horrible soldering' is remarkably effective, I must try it - thanks for the idea.
Should try BGA soldering with this technique.
Translation:
Precautions:
①Check the component list and identify the number and specifications of the components ②Check to confirm all resistance values with a multimeter ③Confirm the polarity of the components and the mounting direction on the circuit board in advance! The resistance is welded to the corresponding resistance value, regardless of the positive and negative poles; Ceramic capacitors are not divided into positive and negative poles;
electrolytic capacitor long-leg positive and short-leg negative; LED long-leg positive and short-leg negative; buzzer long-leg positive and short-leg negative: the transistor corresponds to the welding on the board, the switch and the terminal correspond to the board welding
resistance
200K. The color ring is: red and black Black orange brown,
2k color circle: red, black and black
Brown brown,
4702: yellow purple black black brown
Sound of this tiny buzzer goes inside through my ears and comes out from my eyes... And makes my brain paralyzed
exactly
Whenever I use one of those buzzers I leave the sticker on to mute it a little!
Lol
For the purpose of this video, the LED indicator would have been enough.
I like that you show stuff on the analog scope.
Most TH-camrs seem to scope-shy.
You possibly inadvertently set a world record on putting this circuit together. 😆🏆
9:00 Louis Rosmans last name should be rosin, that would explain his love for flux :D
his flux is not rosin based, I think!
I just checked; it is! It's rosin based, which makes it all the more fascinating how they can get it this good.
store.rossmanngroup.com/amtech-nc-559-v2-30-cc-16160.html
"Even more rosin!!!!" - i can hear those words in Diode's voice
Many of us can play it in our heads in _his_ voice!
*Even more saaaalt*
@@agustinusreynaldi7101 the whole room is shaking
More rosin, more rosin please 😂😂
I am always here because i love the way he speaks/explains.
The real star of the video is the unique soldering technique.
next time just leave the buzzer sticker there to help reduce beeping volume, headphone users will be thankful :D
Oh, I rarely peel the sticker for this very reason you mentioned.
Maybe get a better quality headphone.
or add a better new sticker
Just put some scotch tape around your headset to reduce the annoying buzzing sound.
Its been awhile. While I was burning out learning electronics. This guy is still doing it 😊 thank you DiodeGoneWild for continuing your exploration of modern electronics 😊 I'll catch up with your videos.
Suggest you muffle the squeezer so we can hear you without turning down the volume to suppress the major irritation
He keeps on showing "Even more rosin!!!" 🤣🤣. At least the whole floor is not shaking.
I like the tones of rosin soldering technic 😄
You should put more rosin in the beeper hole.
Great video. I think I might make one of these with my daughter.
Nice rosin technique.
Great video
I had to take some extra anti-OCD pills and wash my hands with isopropanol to recover from watching that soldering.
It worked.
I recommend you to take a bath in IPA it works much better. I tested.
Thanks for sharing this circuit, the kit is usefull and important
I ordered this exact circuit online from eMag and it arrived two weeks ago. It didn't have the S9018 transistor and instructions. The spot for the S9018 transistor was unmarked and I assumed that I needed another to solder a S9012 transitor there. Now I finally know how this metal detector is supposed to work and I'll solder the correct transistor to make this metal detector work now. :)
Masterpiece of soldering "horribly" 👍😸
No konečně analogový osciloskop. Už dlouho nebyl využit.
Verry useful for inside Wall detection
Thanks 👍
0:53 This is what the Chinese text says:
Confirm the polarity and the mounting direction on the circuit board! The resistance corresponds to the resistance value welding, regardless of the positive and negative poles;; AKER; LED long-leg positive and short-leg negative; buzzer long-leg positive and short-leg negative; triode corresponds to the board The upper welding, the switch, and the terminal correspond to the board welding resistance 200K: red, 2k. The color ring is: red, black, black, brown, and brown, 4702: yellow, purple, black, black, brown.
Thanks to Google Lens 👍
a wound coil of copper at its points of field act as the transmitter while the whole coil acts as a reciever so theres no needs to use a seperate coil for transmitting as both work in unison :) saves time and lots of money that way for other projects.
Awesome! This is going to be great!
No way I'm skipping your soldering! It's too damn funny :D
Love your channel bud.
I love using rosin dissolved in IPA: this way you can paint the area where you're gonna solder and avoid this dirty brown mess that's inevitable when using hard rosin.
Wow 😳 nice welding skills
You should try making some device from a TESLA kit i still have one lying around unpacked for some kind of audio amplifier for some kind of headphones . It would be fun if you could find one and solder a 30+ year old TESLA kit , unfortunately i can't donate mine as the package has the items in it damaged . Of course they might be very hard to find so i don't know if that's possible .
*Even more rosin!*
*Even more salt flashback*
I had solder like just two times, and every time it's like a brain surgery.
Thanks for giving me confidence!
Your component marking site is great by the way.
I really must try DGW "horrible" soldering soon.... it's ugly but it's SO FAST.
It is great 👍 Especially your mounting skills with the big Soldering Iron 😅 So if I ever need someone to solder my newest invention, a switchable black hole, I will ask for, your help 😄😂👍
I made this kit about a year ago although I did solder it differently to you but it works the same just a bit of fun :-)
Love this tipe of videos!
I use a similar thickness solder along with an old soldering gun. If anyone's wondering it is easy to properly solder 0.1" parts with it. But if I finally get some loose flux I will need to try this crazy technique.
Now I don't feel bad about my horrible soldering skills anymore. Niiiiiiiiice :)
Soldering is easy if you do it right with the right stuff. DGW just has that soldering gun though which he uses for everything.
Great video. Looking forward to you building a much better metal detector!
Ah, you did the soldering wrong.
When you get excess solder on the tip of the iron, you don't attempt to reuse it. Instead, what you must do is use a quick whip action of your wrist to flick the excess solder off the tip and across the room in the direction of a coworker. The job is complete when each article of their clothing has received a generous splashing of the solder.
I love messing with solder. So I attemped Mr Diode's soldering style
"Fire extinguisher" 🧯 😂😂
Not even 2 seconds, the "fire extinguisher" already there.
When I look at the schematic of this circuit, your soldering technique was totally acceptable ;P
I keep seeing this being advertised on Wish (I don't have the app, it's just an advertisement on Facebook). There is no information about it. Just a picture of the assembled unit. A quick glance had me thinking it was some sort of cheap knock off wireless charger.
Nice video
Entertaining as usual. Great video! Is there a chance you could explain the osilator feedback a little more though? Thanks.
The best soldering method is the worst soldering method.
When you splash tons of liquid solder onto the board, even if you apply a lot of rosin sometimes it tends to make short-circuits on the other side.
I tested it myself.
Eh ? solder splash on one side of FR4 board makes a short on the other ?
@@andymouse yeah, that's right.
You know, when it's liquid - it leaks…
@@andymouse because you are soldering a through hole component where the solder can go to the other side
@@theodiscusgaming3909 I know what soldering a through hole component is ffs ! its hardly a 'splash' or a 'leak' is it ? ...read the original comment again.
But, what does you cat say about your soldering?
That quick soldering will infuriate a lot of young people out there
I had to close my eyes, I couldn't watch this 😫
......it makes me laugh because i do the same thing
Yeah i'm totally fuming
On the thumbnail, it made it look like small bare bones record player lol.😎
Yippieh! New content that is not usb power supplies...
How far it detects a car? It could be a garage detector to avoid hit the wall with the car (?).
I dont think it good at this. The oscillation is fluctuating and very depends on ambient temperature.
Nice soldering
Good video , may I ask where did you purchased this metal detector kit?
Nice man
A plumber using a blow lamp comes to mind
I have this same kit!! Maybe if you change the S9012 with another transistor, but A DARLINGTON ONE, maybe the gain will be higher and maybe it can detect at more distance? Maybe?
Where is your cat? The quite cat is adorable. 👍 😀
very very dodggy soldering :D :D
Do you mind providing the name of the rosin and solder thank you
I will try this way I'm having little luck with the precision soldering. Things are probably getting to hot.
My ears will never be the same after watching this video while using my earbuds. Beeeeeep!
I mostly struggle to read the markings on resistors, especially on blue enamel.
This is one of two points where SMD components are better than THT ones.
Except capacitors which are a pain in the arse.
@@andymouse don't even mention that!!!
am i correct in assuming that one of those 3 (the single wound line of contact) is the transmitter line? which must be really weak in my mind before even building my own mds-60 kit :/
Thank you for your efforts to train and entertain us! Much fun! A few good laughs! 1) If the unit is detecting aluminum, might it be that the unit is really just a capacitive sensor? 2) I think that the capacitor C5, on the buzzer, is just to make sure the buzzer has a continuous tone... Meaning, that it would not make a scratchy sound, as the circuit turns on and off, with minor fluctuation in the distance to the metal object being detected. 3) I watched this video, because I wanted to see if the unit might make a good sensor for a motorized, hands-free, solder wire dispenser. The technician would use a bit of wire and, then, the dispenser would advance the solder wire back to the point of beginning. I hate trying to pull out fresh wire, with my hands full of a really hot soldering iron. That's just plain dangerous, in my opinion. Do you have a suggestion for a better sensor for that purpose?
I wonder why they used a UHF RF transistor (9018) for such a low frequency oscillator? I'd be interested to see how well it'd work with a common audio frequency device.
Nice
If possible, making a video about increasing the sensibility of this little metal detector by increasing the coils and/or adding more components like transistors or ICs
lights are flickering, sparks are rising, EVEN MORE SALT!!! 😅
@@Enderkruemel refference to his tesla coil video, with this fraze even more rosin
11:36 - Well, when you demonstrated the board up close, it was obvious that it has a tap after one outer turn.
Danyk, how do you do reverse engineering and draw the schematics? There are some secrets or easy way to do? Can you make a video showing us how do you get the schematics for example of a ATX power supply or UPS
most of my builds are made with a single coil using only 2 contacts which act as a transmitter/reciever all in one so theres no need for a seperate transmitter coil like the DD coil has for example
@DiodeGoneWild>> why is there 3 lines of contact on the coil on this circuit? can you explain please as i've never seen a metal detector coil that has 3 most of mine are 2 or 4 contact lines :/ 2 being singular coil and 4 being dual transmit and reciever so 3 is a bit mind boggling lol
Na to pájení se fakt nedá dívat 😂 Je na čase s tím něco udělat :D
So wishing you would have put some tape over that buzzer.
It works! Not very well, but it works. I suppose its good for finding lost screws in carpet, but the depth of detection is a bit lacking. Not bad for such a simple circuit though i suppose. Reminds me of my old Radio Shack $20 metal detector. Its good for about 2 inches deep.
Remember not wear safety shoes with steel caps when treasure hunting
Wait a minute! That must be the reason why I always dig a 2 meters deep hole each time my metal detector beeps. To find, nothing.
So, what does the hansom cat think about soldering horribly?
Actually, I did not know about that rosin trick.
Thanks, again, for a fun video.
hy , if you build a seperate larger coils by the same circuit , the detect range will be greater , and with a more sensitive better amplifer also more range
flux is
also, you would make louis rossman happy with your use of not enough flux, never enough flux!!!
does the coil detect the same distance from front and back of the coil? it could be pure proximity or it could be directional
@DiodeGoneWild >> any chance you can do a video with the MDS-60 but copy the circuit onto your own pcb showing soldering and making your own separate coil please?
So what is needed to detect from farther away? This looks like it in not very useful, because it's only detecting from 1 or 2 inches away. And that's through air, without any dirt blocking the signal. What would you need to change about it in order to make it detect say a foot or two deep, through soil? Would the same circuit work for that, perhaps with more volts and a modified (wider?) coil? That included potentiometer seems to offer too much of a range to be of any use getting a finely-tuned discrimination level.
For a better explanation skip to 16:41
Try to find a wire on the walls. When is AC and no power 😉
Even more rosinnnnnnnnn
Can you extended with external coil?
I drank my fire extinguisher before I finished your video...sorry!
To pájení jsem nedal :D
Fastest soldering record😂
I wanna see this guy do a SMD project..
Gotta admit your accent is so smooth
I'd like to see you soldering some BGA Chips with your gun and lots of rosin. XD
0:30
The list of components translates quite good but unfortunately I can’t show the layout here.
Numbering
R1
Quantity
R2
Component name specification
Resistance 200K
Resistance 2K
Resistance 470R
Adjustable resistance 100R
Capacitance 222P
MDS-60 Metal Detector Kit Installation Instructions
Quantity
Numbering
Component name specification
Quantity
Numbering
Q2, Q3
C1、C4
C5
Self-locking switch
v Buzzer
Component name specification
Terminal KF301-2
Capacitance 104P
Electrolytic capacitor 100UF
VR1
C2、C3
I like it. Why not get rid of the buzzer tho?
Extremely annoying buzzer which is intended for alarm, not notification.
Makes great torture device on the cheap...
How can I modify to make it go deeper into the ground. My grandfather left a note that he buried gold deep on his farmland.
Thumbs up for EVEN MORE ROSIIINN