Tesoro Eldorado on the bench

[Ultimate_Haze]

Hahahaha.
Just a note Ivconic.
Dont take everything so serious.
I just finish all.Excelent!
No nise at all.No metter what I touch pcb,buttons,coil conector.
))))))Still no Al panels and shield.Wow!!!!
Still just test coil.In all metal everything fine.
Now I will make proper coil.

About the cable thanks.But this is the best I can find so far.Other is just ordinary microfone cable.

[aft_72005]

Hi,

(my father passed away few weeks ago cause had a very serious health problem, unfortunately).



Kind regards,
Max

Hi Max
It was very bad news about your honorable father .i am very sorry and solace to you .
Best regards.

[gurdal]

I'll try to give you information so thanks ivonic

[Ultimate_Haze]

I have found Eldorado manual.
But still some mistery.Maybe I havent conected the controls right.But it seems that everything is working.My question is is it normal that the device is acting like motion when in ALLM auto and retune?
Because when in normal is non-motion!
Strange still cant get the designers idea.
Anyway excelent device.
Thanks Ivconic.

[Ultimate_Haze]

I have made centretaped coil and have worked alot lately.
So when conect right coil everything went on its place.Now PP and Disc are ok.But cant null the coil so I can have a good performance for coin sized objects.Hum.I will make another coil.But this were prety good.And I have payed alot of atention when wind.The sound is diferent too.Even sweeter.You can hear something like bell on good targets.Maybe my wire is diferent and thats why I can match the inductance or something.But the test coil were so deep!

[taban4o]

Can someone show coil wirements?
When centretap conected to gnd in coil loose all performance.

[ivconic]

...

[perdica 2]

Only center tap i grounded? or
On schematic lead to 2nd pin on Lm308 is grounded

[ivconic]

It is wrong. Does not make much sense to connect it to gnd if already exist center tap, also already connected to gnd? Right?
Besides; you may try and see what happens. Disc&Geb circuitry will work out of range - bad.
Look again my pcb, you will see no connection there...

[taban4o]

Thank you very much!!!
Now it make sense.

[Molzar]

New Project!

This looks like good next project after long winter nap. Had friend make pcb on LPKF router machine, Hell of machine!!! 377 holes in 7 minutes!!! Board is slightly tweaked version of Ivconic pcb posted here (Thanks Ivconic), no changes except for outside dimensions, little smaller and square suits me better!


Molzar

[MaverickITA]

Hi Ivconic !

These are Eldo metal specs:



These are Eldo plastic specs:



You can see that frequency is around 10 KHz.
Using the coil you specified, do you have this frequency or another one ?
Please, if your answer is the second one, please specify the new frequency.

Thank you.

[ivconic]

Hi Ivconic !

You can see that frequency is around 10 KHz.
Using the coil you specified, do you have this frequency or another one ?
Please, if your answer is the second one, please specify the new frequency.

Thank you.

To tell you the truth, i havent measured frequency at all, at my Eldorado handmades!!!
I already made 3 Eldos so far. 2 already gone to my friends and third one is here on the bench, waiting coil to be made. Soon as i finish coi i will measure freq and post here. As i remember, when i finished first one i skimly looked at freq and it was approx 10-11kHz, if i remember right. It is easy to adjust freq on existing coil - just correct caps values. Although i dont see a reason to "hunt" for exact freq cose; if your handmade is working good - than no need for exact freq at all.
Anyway, i will measure it when finish coil and post here.
Regards!

[ivconic]

Here is the third one, few steps before finished. I also had to cut rear edges a bit to fit enclosure. Not a big deal. Speaking of enclosure; i have to thank to our fellow member here, from Bulgaria, who provided me with 3 enclosures like this one on photo. Cheers!

[ivconic]

Last step; pot caps to be mounted. The End!