Which is better for coin search?
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Tesoro Golden Sabre or Tesoro bandido II?
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To be honest, I have both a Golden Sabre and a home-built Bandido. They have really very similar performance in my opinion. With the factory coil you will get decent depth with very good discrimination with either model. If the ground minerals in your area are mild, the Golden Sabre is a good simple coin-shooter, however, it does not have a non-motion pinpointing mode or external ground balance(although you could add this). The all metal position you see on the schematic is still motion based. Still, it's pretty easy to pinpoint with Golden Sabre once you get used to it because it takes only slight motion to produce a signal. The Bandido is a little more complicated since it has external ground balance and threshold and non-motion pinpoint mode. I have had several early model Tesoros and they all seem pretty similar. No major changes in circuitry. They are fun to build since the parts are pretty common.
Merc
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Ok, so i will built a Bandido.
Thank you for your postI'm really happy for your help. But i Have one thing left. Could you recommend me Layout and PCB? I was looking in the forum and I found many different versions... And now I don't know which to choose... I found a Pcb version called "Split PCB Design" , but why this kind of layout version is better, than normal one? http://www.geotech1.com/forums/showthread.php?t=12630
And then I found another one: http://www.geotech1.com/forums/showthread.php?t=13149
and another http://www.geotech1.com/forums/showthread.php?t=10937
And... Many others... So could you recommend me a pcb version which 100% is correct
Thank you.
P.s. Sorry for my bad English....
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I think many people are trying to build TGSL. There is a seperate link just for those troubleshooting what they have built here: http://www.geotech1.com/forums/showthread.php?t=16122
Merc
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Notch is already explained in TGS (Tesoro Golden Sabre) thread.
Let me simplify it;
imagine Disc scale from 0 to 90 degrees. With Disc pot you can adjust "border" under which all detected metals&alloys will be rejected (no sound, no indication - no detection). Others, over that "border" will be detected (sound, some other sort of indication..etc..)
Notch function allows you to define small, narrow portion within Disc range which will be accepted or rejected (defined by Acc./Rej. switch at TGS).
.....
I took TGS schematic and excluded Notch part from it and that's how TGSL originated. Why? Simply i didn't wanted Notch function and at the same time i wanted smaller and simplified design (smaller pcb, less knobs on front panel, less consumption, smaller housing...etc...etc..).
Regards!
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The information on the TGSL is fine, building the electronics and coils is also quite simple providing you have the test equipment at hand which include a multimeter LCR meter and a scope and the knowledge to use said equipment.
What I sugest is read the forums through and through conserning these projects then if you come into problems the bells will ring.
If your a real beginner I wouldnt recomend this project, but if you deside to may pay you to buy a silverdog kit which is listed on here, comes complete with PCB and components excl coil.
If you want top performance the only way is to by lots of each value component and check values before fitting them.
A lot of capacitors in these circuits are very critical even a few pf can have a great effect on the overhaul performance of the project, thats where the LCR meter comes into play, without it you will have no control over what your installing just the say so of whats stamped on the component.
Far as the coils the build instructions on here are very good but they are only a guide, you would only need to be 1mm out on the form and it would make a vast difference with your final inductance and that again is where your LCR meter comes into play.
Also far as inductance theres many factors that effect it even to how tightly you wind onto the form also wire sizes can vary from one manufacture to the next.
The Scope is required at the very least to optimize coil nulling but also a must for fault finding, without one your working blind.
After saying all that there are people who seem to have built these projects and set everything up with just a multimeter and very little electrical knowledge, so hopefully they will give you some input here.
Regards
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Does any video teach you how to calibrate these coils?
Eu leio sua bela explicação com muito cuidado, mas não falo inglês, uso "ferramentas" para o diretório, o que me faz perder o senso do que você é.
Perdoe-me, entendo que a deficiência é minha e você não está aqui para servir todos os tipos de público.
Procuro o melhor projeto ou kit (que pode ser comprado e reproduzido) para buscar ouro (nuggets).
Somos 5 pessoas no grupo, vivemos no campo (para que não possamos cometer muitos erros e sucessos).
Estou imensamente agradecido pela compreensão.
[email protected]
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Originally posted by Silvio Novais View PostEu leio sua bela explicação com muito cuidado, mas não falo inglês, uso "ferramentas" para o diretório, o que me faz perder o senso do que você é.
Perdoe-me, entendo que a deficiência é minha e você não está aqui para servir todos os tipos de público.
Procuro o melhor projeto ou kit (que pode ser comprado e reproduzido) para buscar ouro (nuggets).
Somos 5 pessoas no grupo, vivemos no campo (para que não possamos cometer muitos erros e sucessos).
Estou imensamente agradecido pela compreensão.
[email protected]
and make your posts in English.
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I read your beautiful explanation very carefully, but I do not speak English, I use "tools" for the directory, which makes me lose my sense of what you are.
Forgive me, I understand that the deficiency is mine and you are not here to serve all types of public.
I'm looking for the best project or kit (which can be bought and reproduced) for gold (nuggets).
We are 5 people in the group, we live in the countryside (so we can not make many mistakes and successes).
I am immensely grateful for understanding.Originally posted by Qiaozhi View PostPlease read the forum rules -> Basic Rules of the Forums
and make your posts in English.
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