Simplest PI detector possible?

[Eddy71]

I bought such a detector - it's an impulse type.

https://ru.aliexpress.com/item/KKmoon-Metal-Detector-Pinpointer-Portable-gold-detector-Pin-Pointer-Treasure-Hunter-Automatic-Tuning-Belt-Holster-LED/32835497183.html?spm=a2g0v.search0104.3.160.3c3a4f0eLckFaA&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10151_10065_10344_10068_5722815_10342_10343_10340_5722915_10341_5711416_5722615_10696_10084_10083_10618_10307_5722715_5711215_10059_308_100031_10103_5711515_10624_10623_10622_5711315_5722515_10621_10620_10125,searchweb201603_1,ppcSwitch_5&algo_expid=001362c3-24fe-480d-ba92-a8353181c68e-25&algo_pvid=001362c3-24fe-480d-ba92-a8353181c68e&transAbTest=ae803_1&priceBeautifyAB=0

Is your detector like that?

[Tibuck19]

I bought such a detector - it's an impulse type.

https://ru.aliexpress.com/item/KKmoon-Metal-Detector-Pinpointer-Portable-gold-detector-Pin-Pointer-Treasure-Hunter-Automatic-Tuning-Belt-Holster-LED/32835497183.html?spm=a2g0v.search0104.3.160.3c3a4f0eLckFaA&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10151_10065_10344_10068_5722815_10342_10343_10340_5722915_10341_5711416_5722615_10696_10084_10083_10618_10307_5722715_5711215_10059_308_100031_10103_5711515_10624_10623_10622_5711315_5722515_10621_10620_10125,searchweb201603_1,ppcSwitch_5&algo_expid=001362c3-24fe-480d-ba92-a8353181c68e-25&algo_pvid=001362c3-24fe-480d-ba92-a8353181c68e&transAbTest=ae803_1&priceBeautifyAB=0

Is your detector like that?

Something like yours, this one I picked up , https://www.amazon.com/Pinpointer-De.../dp/B075XHZJY8

[plinio]

Russian Pirat PI (italian) evolution?

https://www.elettroamici.org/metal-detector-semplice-e-potente/

with LM324 is easier

[plinio]

in english

https://www.elettroamici.org/en/metal-detector-semplice-e-potente/

[Andi68]

Thenk you- works ist good?

[eddyaosta]

404

Extraviado

El recurso solicitado no se pudo encontrar en este servidor!

[Qiaozhi]

404

Extraviado

El recurso solicitado no se pudo encontrar en este servidor!

Please read the forum rules -> Basic Rules of the Forums
and make your posts in English.

[Teleno]

The simplest PI detector is also the worst PI detector, keep that in mind.

[kt315]

worse just blunt curve shovel. although... the same.

[dbanner]

Makes for easy pinpointer for Beach. Use tape head from old cassette deck, turn sensitivity down and is very stable, usable. Put vibration from old cell phone.

[Watanabe]

Do you have any video with this circuit running?
Thanks

[Watanabe]

Russian Pirat PI (italian) evolution?

https://www.elettroamici.org/metal-detector-semplice-e-potente/

with LM324 is easier

Do you have any video with this circuit running?
Thanks

[Andi68]

In this circuit, actually only the oscillator is changed, as far as I can see ...

[surfdetector]

I thought that I would post this here as I had not read this article on the forum and perhaps members would find it to be of interest

https://vpayaem.ru/pirat.html

[kt315]

I thought that I would post this here as I had not read this article on the forum and perhaps members would find it to be of interest
https://vpayaem.ru/pirat.html

is it? https://www.ebay.com/itm/Pirate-PI-m...sAAOSwN1pehhsw