Can pinpointer detecting thin chain?

[Nupi]

Now I get it. That is cleverly thought out.
I know you're very good but If you get the job done I make
respectfully a deep bow for you.
I will this weekend play around a little with spice.
Wish me luck.

[Davor]

Just ask if you need help.

[Nupi]

I'll do it, thanks.

[Funfinder]

Hi Nupi, please post a testvideo and don't show up here as too funny, c-o-c-k-y ( = skittishly) with your too much smiley stuff - it could be misinterpreted as mocking or scornful !!

And I wanna see how good can penetrate (poke) your pinponter into soil and how good it detects stuff that is just 2-3mm in size!
Don't lead a big an unrespectful mouth here until you can't show final real good working results or some persons could became very angry!!!
Don't play the big and at everything laughing chief here unless your performance was really worthful or you could regret it.

This also applies to ivconic with his stupid roll on the floor smiley addiction!

Perhaps you guys are just have a super life where you laugh (or smoke weeds or whatever... ;D ) the whole day but this is not the standard everywhere and
therefore a dangerous becamable misunderstanding is before-programmed!
Especially be careful if you directly laugh at arabic people or they even could see this as a reason to stop your as mocking mis-interpreted laughing forever
if it was happening inbetween the wrong situational context.

I wish you really a good success and the best way to achieve it will be a ferrite coil with high concentrated windings (1000 windings) 5cm long and 2cm thick.
A good circuit is just the half important thing.

And what is a pinpointer useful that only you Nupi as a single person can have?! Nothing for the whole treasure-hunting world if it needs it!
While my easy modifyable Garrett Pro-Pointer is already since 3 years available (I have posted my first identical Pro-Pointer Mod already 2011 here in this forum!)
and is a super and real AVAILABLE possibility for everyone who has the money to buy the Pro-Pointer, a screw, a pliers and a soldering-iron!


But Nupi, persons who wanna perfectionate and improve metal-detection-technical things are always welcome.
Thats why its OK even if your result is still unclear to me. What will you do after finishing this project
- starting a bigger production of this pinpointer OR NOT?


And also good luck to you Davor and thanks for your support here with this topic.


However - nupi and Davor, please create a result which is real useful and it should be treasure-hunter examined and approved.

Nupi;190064]Piece of cake. Nupi pinpointer exceeds yours already.
see post #27 - #251 DELETED: STUPID MOCKING ROLL ON THE FLOOR LAUGHING DIRT SMILEYS

[Nupi]

Hello Davor, I have some questions,
1-- can you explain to me how I can see or measure the stability?
2-- it is normal that takes so long at each change of components and the simulation? or is it my PC?


I've never worked with Spice.
The first idea I'm working on a breadboard, then a circuit "in the air" on top of a copper plate as a ground.
I have a simple PC oscilloscope and an impedance meter and a lot of patience and perseverance and of course a
dose of luck.

[Nupi]

Hi,

I have replaced R2 with 470K pot
Also replaced R3 with original value 2K2
3x 10nF cap are still in the board
Now, if I turn very slowlly R2, I get to a point where the motor starts moving 1 second, and stops another second, and them moves again (1 sec sotps / 1 sec stops /1 sec stops)
At this point if I move metal over coil, no change at all

I have tried several positions of R2 and R1, but no detection at all

OFFtopic
Nupi, I have no problem to give you my phone, but there will be the language barrier, most of my english is with google translator
I have no problem also to send the pointer to you (if you have the time of course) and pay shipping it back, and your labor

Regards

I received the package today from Nezocas, with the pointer including the coil.

I have consulted with him if I could post the results, so that others could have benefited.
It makes him no matter what he would have done Incorrectly.
I rejoice when I come across someone who is not affected by his ego, nice.
Thanks Nezocas, to share it with us.


I did some measurements and the coil is not wrapped properly. Independently of each other, the measure ar L1 = 2,32-uH
and L2 = 1,34-mH but together is 537-uH. That means that L2 or L1 is rotated counterclockwise, and that should not be.
All the windings of L1 and L2 are to be wound in a clockwise direction.
Tomorrow I go further and turn the coil open. Maybe I can make tomorrow a video with the results of it.

[Nezocas]

Hi Nupi,

I dont have an Inductance meter.... so I can not say that my coil is exactly the same as yours "lack of equipment".... but I believe, I have followed your tutorial to the letter...let´s see

I think we should all applaud, whatever attempt to invent something new .... even just a way to lose rings in front of a coil

Best regards
Nezocas

[Davor]

The Colpitts configuration would be a bonus regarding the coils orientation mess-up. You can't miss.

Hello Davor, I have some questions,
1-- can you explain to me how I can see or measure the stability?
2-- it is normal that takes so long at each change of components and the simulation? or is it my PC?

1 - your detector beep more frequently when it is out of stability, and not at all if it is too insensitive.
2 - There is no nice way of saying it, but yes, spice takes time. What you get in turn is a way to see the currents and voltages at places you normally do not check with a scope, and also replace just about anything. When you use a ".step param" directive you can sweep values that are not easy to sweep otherwise.

Spice is not able to replace imagination, but instead it makes you try odd concepts and see what else is possible.

[Nupi]

Hi Nupi,

I dont have an Inductance meter.... so I can not say that my coil is exactly the same as yours "lack of equipment".... but I believe, I have followed your tutorial to the letter...let´s see

I think we should all applaud, whatever attempt to invent something new .... even just a way to lose rings in front of a coil

Best regards
Nezocas

Hi Nezocas,
It does not matter that you make a mistake. There you can learning a lot from.
If you knew how often I am mistaken.


On these pictures you can see what has gone wrong.

[Nupi]

The Colpitts configuration would be a bonus regarding the coils orientation mess-up. You can't miss.1 - your detector beep more frequently when it is out of stability, and not at all if it is too insensitive.
2 - There is no nice way of saying it, but yes, spice takes time. What you get in turn is a way to see the currents and voltages at places you normally do not check with a scope, and also replace just about anything. When you use a ".step param" directive you can sweep values that are not easy to sweep otherwise.

Spice is not able to replace imagination, but instead it makes you try odd concepts and see what else is possible.

You're right Davor, but where is he?


It is interesting to visual the developed idea, and to see how that is, when change the feedback pin 5 and pin 1.


Just out of curiosity, what are you, an electronics engineer or would you rather not say.

[PATCHES JUNIOR]

I will tell you that you need the member here named "AZIZ" he know more about building coils than anyone here. Hope he sees this thread and offers his expert opinion here to help you.

[Davor]

You're right Davor, but where is he?


It is interesting to visual the developed idea, and to see how that is, when change the feedback pin 5 and pin 1.


Just out of curiosity, what are you, an electronics engineer or would you rather not say.

Gee, you hit the troll nerve. It only means your pinpointer has a potential to threaten the commercial one. It works like a barometer

The .step param statement is placed as a spice directive text somewhere on a schematic. There are some rules of using it, and the parameter that is changed is used instead of a value in curly brackets, say, {parameter}. I like the ".step param parameter list 1 2 3" formulation. I think the Colpitts version comes with it if not both, and swept parameter being the coupling parameter of the target (seek a statement like this: K1 L1 L2 {parameter})

I'm a MSEE for the time being.

[Nupi]

Gee, you hit the troll nerve. It only means your pinpointer has a potential to threaten the commercial one. It works like a barometer

The .step param statement is placed as a spice directive text somewhere on a schematic. There are some rules of using it, and the parameter that is changed is used instead of a value in curly brackets, say, {parameter}. I like the ".step param parameter list 1 2 3" formulation. I think the Colpitts version comes with it if not both, and swept parameter being the coupling parameter of the target (seek a statement like this: K1 L1 L2 {parameter})

I'm a MSEE for the time being.

To learn Spice good is too much time and energy for me as an RST (Retired Super Troll).
So, I'll leave that up to you then.

If we combine your expertise and my imagination,than, we have the whole Geotech forum begging us
(including Carl and Qiaozhi).

[Nupi]

[QUOTE=Nupi;190370............... we have the whole Geotech forum begging us
(including Carl and Qiaozhi). [/QUOTE]

Ye!! we have the whole Geotech forum begging us to leave.

[Nupi]

Hi Nezocas,

Today, I had not time to make the video, but I did restore the coil. I can not wrap the coil so good if you do that,
but you should do it again by yourself, okay?


Everything is doing well now.I have, C2 - 47nF replaced by a 33nF and the 2N3906 transistor replaced with a BC560,
this for a better performance. He is now as good as the prototype.Nice!!


Tomorrow I try to make the video, Which includes a stability test.
In this photo you can see the setup for the video tomorrow.


Best regards.