Can pinpointer detecting thin chain?

[Nupi]

people, I see you idiotically only kill your time on sh.t tector. you can buy good pinpointer from Russia. this is great alternative of garrett and minelab and not toy you try make.

Are you kidding me???
Would you on this way, on a DIY thread, your russian crap offer for sale?
The pointer from Ukraine is a good pointer but coming from Russia is real sh.t real P.t.n sh.t
I know the Russian m @ rs pointer, three years ago you could buy them as a woman toy.
I have a promotional photo of 3 years ago found for you.
They are because to high radioactive removed from the sales
If you need one, you can still buy them maybe in russian fake ebay.
Now you can still buy them painted black, but now as a pinpointer.

Would you buy a real good pinpointer??
Buy this. But with Dollars

[Waikiki_Sweep]

people, I see you idiotically only kill your time on sh.t tector. you can buy good pinpointer from Russia. this is great alternative of garrett and minelab and not toy you try make.

Looks like it is from Ukraine, not Russia. Now it is a big difference. I prefer to boycott Russian goods and you know why!

[kt315]

[kt315]

[kt315]

[kt315]

people, I see you idiotically only kill your time on sh.t tector. you can buy good pinpointer from Russia. this is great alternative of garrett and minelab and not toy you try make.

[Nupi]

When parts came there will be auto tuning schematic posted already so I will save not only time but some parts too.

Anyway I can not use pinpointer that needs some cranky adjustments when it is 4 ft. underwater. Or I have to dive bottom up to adjust it all the time. And loose all staff from my junk box in that position.

That is precisely the best pinpointer for you ..
Then you can finally latem the mp3 player home.
But the most important thing is you not get bored any more and get hopefully no more ideas.

[Waikiki_Sweep]

You're an excellent explainer Silver Dollar.
I like you.
Now I understand why WaiKikiriki never build circuits.
If the parts come he's forgotten where he wanted to use it.

When parts came there will be auto tuning schematic posted already so I will save not only time but some parts too.

Anyway I can not use pinpointer that needs some cranky adjustments when it is 4 ft. underwater. Or I have to dive bottom up to adjust it all the time. And loose all staff from my junk box in that position.

[Nupi]

You're an excellent explainer Silver Dollar.
I like you.
Now I understand why WaiKikiriki never build circuits.
If the parts come he's forgotten where he wanted to use it.

[Silver Dollar]

It's on the slow boat from china? I hate that, I get going on a project then have to
order a part and wait weeks for delivery...Sort of kills the momentum.

Snail mail is a sort of rhyming slang. It refers to the normal postal mail which
will get it there in 14 days or so even if you pay extra for fast service. It's as
slow as a snail thus "Snail Mail".

[Nupi]

I am so sorry, I have everything except counters so I have ordered counters by "snail mail".
Unfortunately my version is not expected soon.
I bet Davor will buld something interesting much faster than I will get my parts by mail.

What the F.ck is snail mail???????????????????

[Waikiki_Sweep]

What is the problem not to make the advanced "Davor's Nupi pointer" many will want to wait to make it.
The first will be Wakiki_Sweep.

I am so sorry, I have everything except counters so I have ordered counters by "snail mail".
Unfortunately my version is not expected soon.
I bet Davor will buld something interesting much faster than I will get my parts by mail.

[Nupi]

What is the problem not to make the advanced "Davor's Nupi pointer" many will want to wait to make it.
The first will be Wakiki_Sweep.

[Waikiki_Sweep]

Not necessarily. Integration can be asymmetric, and also time dependent, so it can maintain optimum sensitivity.
Once the stability is reached, integration can be slowed down by factor, say 100, and in effect no sensitivity is lost, and long term stability is maintained.
It would make a design more complex though.

That is much advanced level than usual self adjustment!

[Waikiki_Sweep]

I hope it. But I think it will be very difficult when the sensitivity should be maintained.

You can find similar principles in "motion detection" metal detectors like same old Surf PI. It has good sensitivity but you need to move it to detect target because it is auto tunes all the time and once you stop moving it nulling target signal. But because that auto adjustment it can adopt fast changes in the ground conditions.

So you can hear a small target between two sand bumps on the ocean bottom even if signals from such bumps are stronger than target signal.

Non motion detector will have problems to find such target masked by environment changes because it keeps some constant level.

To make a good auto tuning you have to choose proper time constant for your circuit from part of second to several seconds which it needed for signal to self adjust to null.
Also front and end of signals can have different time constants. I like to put diode to make end faster and let circuit to be ready to read the signal again faster. You can try.