Mineoro DC2008

[Geo]

Hi.
Today a friend gave me a DC2008 to modify it. He wants to replace the sensitivity potentiometer with a multiturn one.
I opened it and i saw that the previous owner had open it and had remove the black resin from the receiver pcb.
Also i saw that there is a problem with the oscillator (2N2646).
So i said that it is time for a reverse engineering until i receive the multiturn potentiometer.
I Must tell that my friend found some small objects (ancient coins etc..) with it at small depth (10... 30 cm).
I attach some photos from it...

Regards

[Geo]

I forgot to say that this LRL has not a microproccesor so it is a good time to make a clone of it.
Schematic seems to be very easy.

[Morgan]

Originally Posted by Geo

I forgot to say that this LRL has not a microproccesor so it is a good time to make a clone of it.
Schematic seems to be very easy.

Hi Geo


The DC2008 seems to me the MINEORO who can locate some objects,with other models no lucky for me...

Its very strange that this DC2008 not have multiturn pot. ,all DC2008 i saw is using the multiturn,also the one i have ...

Is interesting if you can find in what frequency this MINEORO is working.

[Geo]

Originally Posted by Morgan

Hi Geo


The DC2008 seems to me the MINEORO who can locate some objects,with other models no lucky for me...

Its very strange that this DC2008 not have multiturn pot. ,all DC2008 i saw is using the multiturn,also the one i have ...

Is interesting if you can find in what frequency this MINEORO is working.

Hi Morgan.
Maybe the previous owner to replace the potentiometer, who knows????
This model is with the IR led near to ion champer.
I check it with generator and it is tuned near to 124 Khz. When i will finish it i"ll check exactly for the working frequency.

[Geo]

This LRL is very strange!!!.
I can't understand how it locate coins with a receiver that has only a 3 stages (transistors) amplifier followed by a LM386 as a pro and a 555.
That is all.
Maybe the field at ancient coins is very strong.....
Now understand why when i visited Morgan at Portugal the DC2008 was not able to locate the objects except the gold medal but with the sensitivity at full.
Maybe with a better receiver to have better results

[kostas87]

Hello everybody, hello geo!
I think I understand how he works this device, I have constructed else like brioche but without electronics ..

** It's simple. The light type l e d makes light impinging on a semiconductor. Converted to the semiconductor and conductive filter.
which can be seen the rare energy emitted the buried metal!

We believe we can help someone what I said!

[Morgan]

Originally Posted by Geo

This LRL is very strange!!!.
I can't understand how it locate coins with a receiver that has only a 3 stages (transistors) amplifier followed by a LM386 as a pro and a 555.
That is all.
Maybe the field at ancient coins is very strong.....
Now understand why when i visited Morgan at Portugal the DC2008 was not able to locate the objects except the gold medal but with the sensitivity at full.
Maybe with a better receiver to have better results

the DC2008 is the mineoro model i use and can pick gold objects,anyway at very short distances and very problematic for the pinpointing.
The buried test gold medal was located in this particular day,however most of the times is not possible to locate.
One other interesting thing,when the DC2008 batteries went to 16 V,the LRL become extremly erratic,anyway in the instructions they said is to change batt. at 12V...

[DrTech]

Originally Posted by Geo

Hi.
Today a friend gave me a DC2008 to modify it. He wants to replace the sensitivity potentiometer with a multiturn one.
I opened it and i saw that the previous owner had open it and had remove the black resin from the receiver pcb.
Also i saw that there is a problem with the oscillator (2N2646).
So i said that it is time for a reverse engineering until i receive the multiturn potentiometer.
I Must tell that my friend found some small objects (ancient coins etc..) with it at small depth (10... 30 cm).
I attach some photos from it...

Regards

hello GEO.

how I can remove the epoxy from a circuit.

My circuit is part of a Mineoro DC2008.

You have Mineoro DC2008 scheme?.


Regards.

DrTech, Mexico.

[GOLDEN LILLY]

Hi everybody, i need a good resolution of lmages of dc2008 from front and back side of it. If available then please post it as well as drawn schematics with values if any. Lets try to clone mineoro's pride whether functional or not. The pictures already posted in this thread is not sufficient to warrant cloning, it has no pictures on the back of the back receiver. I think its time for Morgan to post the good resolution images here.

Regads...

[Morgan]

Originally Posted by aulook

Hi everybody, i need a good resolution of lmages of dc2008 from front and back side of it. If available then please post it as well as drawn schematics with values if any. Lets try to clone mineoro's pride whether functional or not. The pictures already posted in this thread is not sufficient to warrant cloning, it has no pictures on the back of the back receiver. I think its time for Morgan to post the good resolution images here.

Regads...

the problem is,i lost the images...

[Morgan]

Originally Posted by Morgan

the problem is,i lost the images...

have this one only

[Geo]

Originally Posted by DrTech

hello GEO.

how I can remove the epoxy from a circuit.

My circuit is part of a Mineoro DC2008.

You have Mineoro DC2008 scheme?.


Regards.

DrTech, Mexico.

Hi. somewhere in forum i put the receiver of DC2008. I have not all the value of components because it was a hard work. Had to be desold all the components. Why you need to remove the epoxy????. A good way is to warms and cools it many times.

[putrechigi]

i have this i hope it help you

[folharin]

how you will schedule the memory atmel?

[DrTech]

Originally Posted by putrechigi

i have this i hope it help you

This diagram does not correspond to mineoro DC2008.

The DC2008 does not have the ATMEL CHIP

[Geo]

Originally Posted by putrechigi

i have this i hope it help you

Hi Manolo.
This schematic drawn by me and it is from FG79. Not so good model, FG80 is better and has different schematic.

Regards

[DrTech]

Originally Posted by Geo

Hi. somewhere in forum i put the receiver of DC2008. I have not all the value of components because it was a hard work. Had to be desold all the components. Why you need to remove the epoxy????. A good way is to warms and cools it many times.

Thanks GEO,
Why you need to remove the epoxy????. Mineoro "NO POWER ON"

I've fixed some problems that had mineoro DC2008.

1. - Potentiometer not connected correctly.
2. - battery Holders broken.
3. - Ground wire with false contacts.

Mineoro POWER ON
Detects a spark 1.5V to 60cm.

Can anyone tell me if the operation is normal DC2008. that can detect a spark 1.5 to 60cm.

[Geo]

Originally Posted by DrTech

Thanks GEO,
Why you need to remove the epoxy????. Mineoro "NO POWER ON"

I've fixed some problems that had mineoro DC2008.

1. - Potentiometer not connected correctly.
2. - battery Holders broken.
3. - Ground wire with false contacts.

Mineoro POWER ON
Detects a spark 1.5V to 60cm.

Can anyone tell me if the operation is normal DC2008. that can detect a spark 1.5 to 60cm.

Hi.
60 cm is OK for FG80 or DC2008.

Regards

[Dubulumach]

GEO's Mineoro DC2008
Hi.
Today a friend gave me a DC2008 to modify it. He wants to replace the sensitivity potentiometer with a multiturn one.
I opened it and i saw that the previous owner had open it and had remove the black resin from the receiver pcb.
Also i saw that there is a problem with the oscillator (2N2646).
So i said that it is time for a reverse engineering until i receive the multiturn potentiometer.
I Must tell that my friend found some small objects (ancient coins etc..) with it at small depth (10... 30 cm).
I attach some photos from it...

Regards


HI GEO
Do you have components values or high resolution pictures of both sides ?
What is exact stimulator frequency of electrostatic chamber?

2N2646 is an UJT transistor. It means very sharp pulses at output. Right ?

Regards

[Dubulumach]

Hi all


Who could explain connection between static electricity (bipolar charges) and infra-red rays?


Any ideas why Alonso stimulate static chamber with IR-light?


Thank you !

[Geo]

Hello Dragan, how are you!!!!
With ir emmiting tries to enchace the ions that existings near the surface, especially at dark time. I have see FG80 models with one or two or none Ir led, so i believe that this method does n't do nothing.

Regards

[Dubulumach]

Hello Geo
I am well thank you.


Did you tried DC2008 without electrostatic chamber, only magnetic and electric receivers. Did he worked or not?


I don't agree with you about ions and IR light.The reason is simple - IR light haven't enough kinetic energy to ionise volume near the surface. If it would be ultraviolet light than yes. I don't think that Alonso have had ultraviolet leds in his devices.


Do you have HQ pcb pictures of DC2008 ?



Regards

[Dubulumach]

Another logical variant about IR light and electrostaric chamber/s is that the whole Alonso's story about is "smoke and mirrors".

[Geo]

Originally Posted by Dubulumach

Hello Geo
I am well thank you.


Did you tried DC2008 without electrostatic chamber, only magnetic and electric receivers. Did he worked or not?


I don't agree with you about ions and IR light.The reason is simple - IR light haven't enough kinetic energy to ionise volume near the surface. If it would be ultraviolet light than yes. I don't think that Alonso have had ultraviolet leds in his devices.


Do you have HQ pcb pictures of DC2008 ?



Regards

Yes i tried without chamber and it was working ok. This is the reason that i believe that ion chamber don't do nothing.
About ir led..... who knows if it is a ultraviolet A or Ir?? UB-a is not visible (if i remember ok).

Regards