Eliminator E-120

[Mike(Mont)]

I did hear it works as a stand-alone MFD set to 5kHz for gold. Said it gave a strong signal. Also said it works at 8kHz for silver but it took a bit longer for the target to come in. Also heard with a home made MFD a small target tunes out at a lower setting than what the video shows. Also said it works "through the air, too" with the antenna pointing upwards instead of in the ground.

[humhum]

I think this is not a PIC.
I think Geo has it right.
This looks like a 3915 or 3914 to me.
From the circuit board we can see it is cheap, not worth the money to use a PIC.
The power goes directly to an oscillator controlled by the knob, which probably feeds to a tank circuit to create a voltage at the 3915.
Then the 3915 will cause LEDs to light depending on where you turn the knob.
At the same time, a parallel path sends the oscillator output to the ground spike.
This can be built for maybe 10 € in your garage.


Best Wishes,
J_P

Hi J_Player, if this IC is only driver for all LEDs (LM3914-15) , where is OSC or Freq. Generator. Maybe is in down side.

[J_Player]

Hi J_Player, if this IC is only driver for all LEDs (LM3914-15) , where is OSC or Freq. Generator. Maybe is in down side.

Capacitors and resistor and transistor and knob to left side of IC. Also tank circuit probably located here.
Driver for the output is transistor on the right end.
I think no components on the back side.
Just my guess, because we see only a partial circuit.


Best Wishes,
J_p

[mustefa ubram]

I think no components on the back side.

Best Wishes,
J_p

no j-p
Does the back of any piece.I saw this some time ago.
All the pieces are on the board

[Mike(Mont)]

This forum is a den of thieves and hypocrites.I would add several more expletives but it would get deleted. I bet half the users here are all alias identities of one or two people. They complain about hard-working LRL manufacturers then think nothing of stealing their work. I guess that's a trait of the metal detector industry.

[Carl-NC]

Mike, you're right, I admit it... everyone on this forum is actually me. And I'm not even real, I'm just a Prolog program running on an Apple 2e.

You know, you wouldn't have nearly so much to complain about if you had an LRL that actually worked. Sucks, don't it?

[kaligula]

All of those LESs all very good to put them for New year on my Christmas three. This devices maybe has efect but the LEDs I think are good only for New Year if you understand me what I want to say

[Mike(Mont)]

Anybody use one of these? I found you can use a lower voltage battery for better pinpointing when used as a stand-alone MFD transmitter. Instead of the required 9 volt battery I used a 6 volt sealed lead acid battery 3 or 4 amp hours. The low battery light comes on but the device still puts out a signal but it is weaker. A set of 4 alkaline AA's should work but I haven't tried them with a target.

[fmnotes]

I think this is not a PIC.
I think Geo has it right.
This looks like a 3915 or 3914 to me.
From the circuit board we can see it is cheap, not worth the money to use a PIC.
The power goes directly to an oscillator controlled by the knob, which probably feeds to a tank circuit to create a voltage at the 3915.
Then the 3915 will cause LEDs to light depending on where you turn the knob.
At the same time, a parallel path sends the oscillator output to the ground spike.
This can be built for maybe 10 € in your garage.


Best Wishes,
J_P

It is neither the LM3914 LM3915, is a programmable pic.

[perzo]

circuit E-120

HI ALL:this is circuit diagram E-120

[Sneshko]

Very good dear perzo!
Thank you for schematic.
Do this with the PIC16C716 has Hex code?
If there is - if you want him to share with us?
Regards!
Sneshko

[fmnotes]

If you have the hex file can I upload pcb.
I have a full picture of the interior but not the HEX file.

[saber]

Very good dear perzo,

can you share the HEX file with us?

please....

[perzo]

HI :ALL i have,t hex code.

[fmnotes]

HI :ALL i have,t hex code.

you can send me the hex file?