This Schematic need to try
 

This MFD (Magnetic Field Detector) Sch build from me , I need to try this in real , but I not have time for Test . This works without Tx Stimulator device .
If any build it , please report me for result .

Not enough data. Or C3, C4, C5, C1, C13, C14, C15 ...1PF ? RV1 rating ? Is the transformer data foggy?

code hex pic?

You can use without PIC (no need PIC), Out from R1 is fix 2.00 V , when catch
Phnemonie Out will be 2.60 V , for this you can use one Transistor with LED in collector
so like indicator .

help !!!
 

hello humhum,
Have you tried this project? I guess it's magnetic wrapped. Can you give some information on how I can get the transformer.

Transformer is Ferrite torodial with 2000 AL . primer two tour , seconder need experiment for
selected set Frequency of 555 , this is very sensitive device , if You coorect setting it .

Yes, the device is very sensitive. Even a person passing by the antenna reacts to 4 meters. There is also a reaction on the cardinal points. The reaction can be traced from south to north.

hii
 

hii,
What is the capacitor data? Can I request detailed information? I think the thyroid transformer will be special winding

:)

The transformer is an antenna like the Mineiro models. And select the capacitor for the receiving frequency you need. With the frequency, it will become clear to you when you assemble the generator on the 555 timer.

Hi Pahom , I am glad that You got the result with my Schematic and Congratulations of You .

Does You test near real Buried object ?
Regards .

Hello Hum Hum. Unfortunately, there is no result on my test site with your scheme. The circuit works like a capacitive device. And the generator on the 555 timer is not very stable.

Yes Pahom , Right is that this Sch is capacitive device ,
, about astable Freq. Generation of NE555 , You need use a good
Faraday cage for not to be affected by environmental factors , so will be more stabil .

I agree with shielding from noise. But then you need to change the power. Otherwise, the screen will become an element of Antena. I liked the idea myself, and the principle of work looks like an IHA-1 device, but a mortgage and mee are inevitable. I think that if the generator is adjusted to the frequency of 700-900 Hz, you can try to look for voids.

hello
 

Dear pahom,


Can you give me information about the construction of the transformer?
I will be happy if you share a photo.

best regards :)

The transformer is simple. The transformer consists of two ferrite cups with a magnetic permeability of 2000. I already told you that the same as the Mineiro FG80 devices, their photos are full on the forum in the sections on the Mineiro circuits.

http://www.aa5tb.com/loop.html
https://www.e-magnetica.pl/doku.php/al_value
https://ozdisan.com/p/884?ids=10336;...&sayfaAdedi=20
https://www.atd-shop.com/x1610-en/fe...65805j0000r087

I think that with distance between Antenna to circuit this problem will solved , or also so will not be affected , need to Try for best position .
Yes this circuit can use for search Voids , also with using different Frequency posible is Find of
precious Metals. Need to Try .
In Realy I not build it , I only created this Sch and tested with Simulation , Works wery well .