Pi Pinpointer

[BKY1337]

Does anybody know the shematic of this pinpointer: https://www.youtube.com/watch?v=Spcio0bolqo ?

Or similiar one.

[dom44]

That's not a pin pointer that's a metal detector wont help you find a small coin in a pile of dirt would be like running the metal detector head over it again. i did build a pin pointer using the pirate pi metal detector was quite sensitive just use a ferrite core coil instead of the normal loop coil.

[6666]

Does anybody know the shematic of this pinpointer: https://www.youtube.com/watch?v=Spcio0bolqo ?

Or similiar one.

Here is the website that shows all the details of the pinpointer conversion

http://www.imede.it/contenuti/ShowAr...ettronica&c=29

[chemelec]

With some Practice, you can pinpoint objects using a PI detector, even with a large Coil.

[BKY1337]

Thanks, the russian pirat looks easy, I have a VLF detector and i need a pinpointer.
I think i can easier find coins with more depht than just 3-4 cm.

Is this strong pinpointer the italian one?

[dom44]

the PI pin pointers are good but heavy on battery consumption i just built the FM2 but involves programing a pic chip but excellent sensitivity and discriminates as well.

[BKY1337]

Are there equivalents for IRF740 and TL072?

Because i have all parts except this two.

[kt315]

With some Practice, you can pinpoint objects using a PI detector, even with a large Coil.

Gary, i had put a video with a man pinpointing object with ramka coil 1mx1m. this name "by edge" or "on edge".

look 1:27

https://www.youtube.com/watch?v=ATLehDsygGs

[surfdetector]

Are there equivalents for IRF740 and TL072?

Because i have all parts except this two.

TL072 Equivalent ICs

LM358, NE5532, OPA827, LT1972, ADA4610-2

Alternatives for IRF740

IRFB13N50A, UF450A, SSF13N15

[Nightryder]

Here is the website that shows all the details of the pinpointer conversion

http://www.imede.it/contenuti/ShowAr...ettronica&c=29

Does anybody know the shematic of this pinpointer: https://www.youtube.com/watch?v=Spcio0bolqo ?

Or similiar one.

Because the link provided by 6666 wasn't much of a help for me, I spent too much time looking for it since I first watched the video. I only could find these photos. If anyone has any file or maybe all the files to build this, please do share it with me.

[Nightryder]

This might be it (see attachment). I think what's in the video (post # 1) was an early version of it. Obviously, it's a pi design and I think the LCD screen is an upgrade. There are three hex files but I read a comment of some publisher on some foreign forum that the file named (BRN-1 SON_876a) is the one he used. It was designed by someone called Baron66 and I think he designed it based on what chips were available to him. Such that he used only the first part of LM358 as preamp. The project is called BRN PI for those of you who want to look it up.

I'm going to build it as a pinpointer maybe without the LCD or the volume buttons. I will definitely be in need of the retune and sensitivity buttons. Cheers!

Here's another video of the project as a pinpointer with the screen installed:

[Nightryder]

https://www.geotech1.com/forums/foru...%B0tal-p%C4%B0