Looking for open-source deep PI metal detector schematic

[Carl-NC]

No, and to get more depth requires (literally) an exponential increase in power. You will need a car battery and a 50-amp transmit current just to get a modest improvement. It's a limitation in physics.

[55323352]

Here are the internal photos of the DIY machine I just bought from someone. It's a clone of the Chinese 6103 board.

[algan]

Here are the internal photos of the DIY machine I just bought from someone. It's a clone of the Chinese 6103 board.

What is the name of the original detector and where can I buy your board? Are they available on Aliexpress?

[55323352]

algan
Hi Algan, this one isn’t available for sale — it’s made by Chinese hobbyists as a DIY project, and there are no schematics for it.
Still, with a 40cm coil, this machine can detect up to 1.5 meters deep, but its stability isn’t great.
It’s a clone of the 6103 circuit board.

[GeoMax]

Interesting... and what kind of clone detector electronics does the 6103 board use?

[algan]

algan
Hi Algan, this one isn’t available for sale — it’s made by Chinese hobbyists as a DIY project, and there are no schematics for it.
Still, with a 40cm coil, this machine can detect up to 1.5 meters deep, but its stability isn’t great.
It’s a clone of the 6103 circuit board.

I think it's some kind of copy of the Chinese PI200 https://www.youtube.com/watch?v=32aYqs3E538