Wireless Coil

[ivconic]

XP Deus coil battery replacement kit is expensive to you??
Ok, no sweat!
You may use any similar with nominal 3.7v voltage.
Any current. Of course; more current - the better.
No sweat.
Now on market there are plenty of those batteries, varying in current from 400mAh to 3200mAh.
Let us be reminded on fact that original Deus batt is just 600mAh. Lasting up to 19 hours on the field, ha!
Where to find such shaped batteries, to fit into Deus coil?
Everywhere! Most of the modern drone toys, helicopter toys also, small battery operated navigation systems too, small cameras... what else?
Most of those mentioned usually DO HAVE similar or almost the SAME battery! Most often even with larger nominal current, which is SUPERB!
Prices? FUNNY!
So?
Still ready to complain?
Or grapes is getting sweeter now?

[ivconic]

Hey look!
My cheap drone is using almost identical battery!!!
Wow!

[ivconic]

My question is, what problem is solved using a wireless coil design? Other than aesthetics, I don't see the benefits. It seems to only create more problems.

"...It seems to only create more problems..."


What?
Please can you name at least one?
Please enlighten us here!
Seems i was pretty blind and deaf in last 3 to 4 years, since i haven't noticed NEITHER ONE problem specifically tied to fact that coil is wireless!
What a shock for me!!!!
...

".. specifically tied to fact that coil is wireless..."

Be fair, be honest and be sport and keep this notice on mind, when trying to imagine what would be those "problems".
Because ignorant people may interpret any other problem as a problem related to the fact that the coil is wireless.
That's the common knowledge of ignorant minds anyway.

[ivconic]

And my last notice for today here is about coil balance.
Somebody previously asked something about coil balance in case of replacing battery... i am lazy to look back for exact post.
My answer;
no fears fellows! Perfect balance will be still there, even if you put new battery slightly off the previous position, no worries!
Also, battery presence in coil is not affecting coil balance at all. Sensitivity and discrimination neither.
Coil is electronically balanced and compensated with all it's present physical "properties", each time machine is switched on.
Btw that's not some novelty anyway, nor is some "space technology secret" (except for the ignorants).
While on this topic; i would rather point you on some very sweet solutions presented in Russian SOHA design.
All the answers are there, pretty "open" for enthusiasts... and those who can read, of course.
Cheers!

[Skippy]

Thank you for your contribution, Ivconic. You have backed up my assertion that the Deus battery is replaceable without much trouble. And you are 100% with me on the awful connectors used on wired coils (which should be solvable).
However, in response to this question:"I haven't noticed ONE problem specifically tied to the fact that the coil is wireless",
there are several mentioned in earlier posts. The inability to function underwater unless you 'add a wire' being an obvious flaw.,And the extra cost being another.
Do you have a link to this SOHA coil design? It sounds interesting.

[ivconic]

Thank you for your contribution, Ivconic. You have backed up my assertion that the Deus battery is replaceable without much trouble. And you are 100% with me on the awful connectors used on wired coils (which should be solvable).
However, in response to this question:"I haven't noticed ONE problem specifically tied to the fact that the coil is wireless",
there are several mentioned in earlier posts. The inability to function underwater unless you 'add a wire' being an obvious flaw.,And the extra cost being another.
Do you have a link to this SOHA coil design? It sounds interesting.

That's because i haven't used it in a deep water so far, you got me there!
Though i used it on few occasions in shallow streams without problems.
But that's really not serious remark, right?
One piece of wire is less than several pieces of wire in coil cable, right?
Moisture can't harm naked antenna extension, while it can certainly affect cable with several leads inside.
If one wants to dive with md than Deus is not the choice, for sure.
Remarks i see here on this topic are not serious at all.
...
Soha;
http://alltech.at.ua/forum/3-12-1

[ivconic]

Thank you for your contribution, Ivconic. You have backed up my assertion that the Deus battery is replaceable without much trouble. And you are 100% with me on the awful connectors used on wired coils (which should be solvable).
However, in response to this question:"I haven't noticed ONE problem specifically tied to the fact that the coil is wireless",
there are several mentioned in earlier posts. The inability to function underwater unless you 'add a wire' being an obvious flaw.,And the extra cost being another.
Do you have a link to this SOHA coil design? It sounds interesting.

Oh sorry, confusion!
Not exactly a coil design. I was rather thinking on whole concept.
It's been a while since i checked the progress.
Now i see significant evolution of that project.
Now is "Fortune-M".
I was mentioning "Soha" meaning on electronically measured coil balance and compensation, which can be monitored on it's LCD.
And now i am lost in news and upgrades there; can't find exact article which explains it.
...
Whatever; one of the questions here was about battery presence in coil housing and doubts about good balance.
Once battery is placed inside and fixed with silicone; it become a "property" of coil and it is balanced very well.
Not to mention that battery actually is an "active" part of coil's circuitry, with its negative lead.
Who ever made diy coil and tried to achieve good balance; most probably played a bit around it in process of balancing and noticed that balance is not affected much with fixed parts near/inside the coil.
Also some more precise balancing could be achieved additionally with adding small pieces of Al foil or Fe chunks (depends on phase position) somewhere in the coil body to improve and narrow coil balance.
Knowing that, it is presumable that Deus coil battery, once put and fixed inside; certainly is not presenting any kind of disturbance towards good balance.
Above all comes the fact that Deus coil is additionally electronically balanced on each switching ON.
Simple facts, no need to debate about that nor to place funny and untrue remarks upon that.

[Tim]

Surely if the battery was of a different mAh the composition would be different, causing an adjustment? As with the positioning of the battery? Although this should not be a problem if their is available adjustment within the controls.
I see batteries as more of a problem than cords. One simple cord is better than 2 lots of batteries in my opinion.
Currently I'm putting together the tacoma56 SurfPro v3 DD. Bought assembled. Planning 3x18650 (=15000mAh), an onboard over/under charge circuit, 5x1.3 charge plug, and a 6"x4" 12v solar panel mounted on the stem.
Previously I have made Colin Mitchells TE No.8 circuit and experimented extensively with this stable, sensitive circuit. A large drag coil, of the desired width and length, can be connected via a 5m RCA cord (resistance adjusted/compensated) to the box positioned near the [supressed vehicle] radio or antenna. Use a solid draglink so the wire doesn't flop around. A 100R or 500R, multi-turn full size pot in the coil-only circuit provides amply sensitive adjustment.
In the past I have used cheap Fm transmitters to pipe music to radios down the shearing board from my laptop, and although I have several of these, and radio-headphones, it's just more batteries to go flat. An on-board speaker/amp or light headphones/earbuds is actually more convenient AND effective.
As for cords, the more internal wires, the more prone to fault. I will try RG58 and 5-pin ML-style plugs for the Surf, but I am currently happy with simple, cheap RCA fittings both ends,for what I have been doing so far. They are very easy to fault-find and replace.
I am sure, however, that any simple detector could be re-designed to be a singular unit for remote application. I would hazard a guess that the more complex curcuitry would compound the unforseen complications of such a design.
A jerry-rigged vac-bot with an on-board GPS to mark the beeps. Solar panel on top. Ta-da!

[ivconic]

"...1) Surely if the battery was of a different mAh the composition would be different, causing an adjustment?
2) As with the positioning of the battery?
3)Although this should not be a problem if their is available adjustment within the controls.
I see batteries as more of a problem than cords.
4) One simple cord is better than 2 lots of batteries in my opinion...."

1) No it doesn't make a sense to think that way. LiPo batteries can vary in current and yet be packed in a same volume.
2) Small jitters in position doesn't make any significant difference. It is compensated easily.
3) Automatic procedure on start up. Setting up default starting conditions.
4) Imagine yourself prospecting somewhere between Lindley and Beatty with no trees around; you can't even hang yourself with that cord!

With some PI detector cordless approach similar to Deus's morphology; doesn't make any sense too. With such current drain; you shall have 1kg battery in coil!
As i said, in a plane and leveled desert "wired" detectors" are proper choice. Minelab perfect.
...
Btw what's tacoma56 SurfPro v3 DD??? 3 tons car or PI detector with 3kg battery!?