Miner-1, Miner-2, Miner-3, Miner-4 from pulsdetektor.de

[zEUs]

Hello,

i'm a newbie from germany here, sorry for my bad english...

In 2012 i built the MINER-2 during 3 Month.

The "machine" never worked as expected - till now (2019).

Some parts were discontinued, so i had to take "cross-compatible" ones.

I talked to Diethelm Neyka (the developer) not hours or days, we talked weeks to each other... But i did not reach the level i needed to find the mistake(s).


Now, 6-7 Years later, i reactivated my Project, because 2 things got better, my experience and my hardware for measurements?



The worst fact is, that Diethelm Neyka died 2 years ago, R.I.P.!!!


His projects are discontinued, the whole material is gone

I figured out one main hardware-problem, Diethelm always said: "Pay attention on D5, D6 and D7".

The Signal after R7 seemed to be strong noisy (± 200mV p.p. @ 16MHz), and after R27 (IC5#2) it got stronger... The noise causes amplification-mistakes, so the signal at the output (IC5#6) seemed to "dance", it was out of control.

First i tried to reduce the level with a pulldown -> no good idea...
So i tried to figure out the reason for the noise with focus on XT1 and XT2 and the capacities, because there is no other 16MHz-source on Board. There was everything okay.
Hm... So i had a look in the Datasheets of the components and figured out, that D5, D6, D7 have "high capacities", the signal began to swing through the coil and capacities, first @16 MHz, then slower, so i changed them.

D6+D7 now are BAT42 - diodes.
D5 now is a SMBJ5.0CA - supressor.
Now the noise is much lower (25mV p.p.) and the signal at IC5#6 much "clearer".
Now i plan to optimize the whole layout, but i ask me and you: "is it worth it?"

Information:
- Miner 1 and Miner 2 are nearly similar
- Miner 3 and Miner 4 are nearly similar
- Miner 2 is "better" than Miner 4
- Miner 3+4 were developped for lower claims (smaller display, 1 DC-DC converter less)
- Diethelm said: "If you want to build the best one, build Miner-2..."



Is there anybody out there interested in developping and optimizing the Miner-Project?

[Qiaozhi]

I only have a schematic for Miner 4 in my archive (see attached).
If you have schematics for the Miner series, please upload them here. Click on "Go Advanced", and then "Manage Attachments".

[j570]

Please use this link. There are almost all project from pulsedetector.de. Enjoy.
http://wyslijto.pl/plik/tolygias5c
( Because it is 40 MB file and forum limit is 1 MB I sent by link)

[6666]

Please use this link. There are almost all project from pulsedetector.de. Enjoy.
http://wyslijto.pl/plik/tolygias5c
( Because it is 40 MB file and forum limit is 1 MB I sent by link)

Thanks

[Funfinder]

> but i ask me and you: "is it worth it?"

I'd say that such experiments are always worth it, if you have the right motivation, help and free time!
My selfbuilt vibration circuit laid one year on ice, halfready pre-built, but then I wanted some success and
finished it. You also can finish or improve it in honor, respect or memory of Diethelm Neyka, making his
legacy great. Changing and replacing 5-10 parts should be no big problem anyway - what merely counts
are good and reality-near testfield-results. So best possible or fitting coils will be also an important topic.

[bernte_one]

dont knew that he died, ok so R.I.P.

had often contact too, but short time after he build his new website and forum the contact wasn?t any more and his forum was spammed


Zeus if you plan to continue on miner projects - i would follow

[Andi68]

It would be time to start a German "Geotech"

[bernte_one]

then search on detektorforum.de, christian and carl know each other, and i think most clever people from detektorforum are also here

[Andi68]

Sure, I'm in the Detektoforum. But what is still written about technology, self-made ??

[dbanner]

Thank you J570.
I see many of these are with micro controllers. Very nice, except something is missing? Man passed away,RIP. Many good designs.

[kt315]

Please use this link. There are almost all project from pulsedetector.de. Enjoy.
http://wyslijto.pl/plik/tolygias5c
( Because it is 40 MB file and forum limit is 1 MB I sent by link)

thank you lots j570. seems your archive is full. i have just 18MB of files of this german guy.
-------------

RIP .........

[zEUs]

Here is an archive of Diethelms download-area:

https://web.archive.org/web/20140219.../download.html
A main problem is, that the BUP314 is discontinued too. There exists a BUP314D but it is useless, because there is a TVS/ESD diode integrated, means: The "answer-signal" is "shorted" to ground und can not be analyzed.
It seems, in Italy, GB and China there are some dealers with remaining stock of BUP314.
Other IGBT's without TVS/ESD can be found here: https://www.infineon.com/cms/de/prod...arallel-diode/
5-6 ones i've got in stock by myself...

German Forum:
I think, here we can reach more developers - worlwide. A german thread could be helpful, a WhatsApp or Telegram-group, too...see

Another Fact about the PIU i figured out:
Diethelm wrote, the coil is initialized automatically. That's fact.
IC6#8 is the output of DAC7611. It is connected to IC5#2, the "receive-signal-input" of AD8055. The primary measurement seems to be done over Q5 - it "sends" the received signal to AtMega8. During "startup" AtMega8 "calculates" a "correction-signal" and sends it to DAC7611 (D-A-converter), so the correction-signal can be added or substracted from IC5#2.

[zEUs]

Pictures of Noise

Noise (old configuration) on IC5#2 amplified to IC5#6



EDIT: Example for BUP314 stock (qty: 1200 today…): https://www.ebay.de/itm/Infineon-BUP...MAAOSw2gxYy6bz

… not only useful for miner-projcts…

EDIT2:

I Just ordered 4 of these (pollin-elektronik via Ebay-Deutschland, wo ich auch herkomme ;-)

I'll try to change the BUP314 and will report...

https://www.infineon.com/dgdl/Infine...258d0f50a8369e

[Andi68]

For the BUP314 is likely to find a much cheaper replacement is also easier to obtain.

[ivconic]

Excuse me in advance, i don't want to be understood as spoiler or party breaker, i just want to tell my own experiences here.
Back in 2008. i met for the first time those products.
It was the peak of their offer, the "Sirius" model. (photos bellow)
When unpacked it was impressive how is looking. Quite nice and "looking sharp" package.
Large color display. Offering a lot "jingle&bells". Breathe taking.
But... after just few seconds on trying to operate it; it was total disappointment , even more than that.
Graphical user interface lags, delays, slows down, sometimes deaf on commands. Processing them so slowly and with horrific annoyance.
In shorter words; horror. In addition; useless horror.
Ok, the "digital part" was obviously done pretty ambitiously for the time.
Let's try to see the performances of the "core" itself; the hidden PI detector inside.
So i spent 4 hours (yes, whole 4 hours in continuity) on my addict (extra large space with extra comfort for such purpose) trying to walk through adjustments and presets and finally to make it work right.
No way! I failed. It performed so poorly and so useless that i was quiet disappointed.
Very slow and inert response. Complete deafness on small and medium sized targets. Only extra large targets are detected and only on short distances.
At the time i had White's Spectrum with 25cm coil. It easily outperforms the Sirius in all the possible tests, by TRIPLE of the achieved distances in air.
For example; ashtray made of bronze with silver coating: Sirius detected it barely at 40cm distance in the air. No matter what ever i tried in adjustments. And all that with slow and inert and mum response.
6 hours later i was sure 100% that it is complete useless piece of junk. Overpriced by many times.
Complete disaster.
Later on i contacted with several other people and exchanged experiences. I got more less the same reports from them too.
...
Year or two after that i tried to make Minipuls2. So i made it. It worked. Not god at all. Again slow response, inert and deaf on most of the targets. Useless. In short words.
Now... i think that something very wrong is in the core concept of all those coming from the same "kitchen" (author).
...
So, on question "is it worth it"; i would answer like this: "Yes, maybe, ONLY if you dramatically from the roots change the core concept."
And even than not to expect any higher price for that. All those were heavily overpriced for what they offer in performances.
Wide famous DIY Delta Pulse beats the crap out in any aspect of testing or working on real terrains in real searching... compared to all models from the list we see here.
11 years later i am sure that a lot of improvements can be done on some of those projects. Because now we have available much better material, more powerful micro controllers and large open source knowledge base.
So now situation is quite different.
Passionate expert with a lot of enthusiasm can do something from all of that.
That would be my answer on that question.
Some photos i kept in my archives: