Lrl from Italy

[FrancoItaly]

If it is in self-oscillation then also removing the quartz we have a DC output. With respect to thresold potentiometer I don't understand what you mean, by varying the cursor you find a point where the led is on, variant on the contrary the led goes off.

[abdou2014]

I did not understand self oscillation, my LRL is very sensitive , in the house it detect TV 3 meter, the telephone and internet cables 1 meter, outside the house when i raise my hand the LED lights, I lower my hand the LED off , is that self oscillation ?

[FrancoItaly]

No, your Lrl is ok. With self oscillation the Lr is almost insensitive.

[abdou2014]

i'm glad to hear that , thank you Mr Franco

[brs]

Originally Posted by abdou2014

Display 1 Led

Is it possible pcb black and white

[abdou2014]

1 LED DISPLAY PDF

[brs]

Originally Posted by abdou2014

1 LED DISPLAY PDF

Thank you

[abdou2014]

SENSOR

[abdou2014]

Sensor

[abdou2014]

Originally Posted by FrancoItaly

No, just a single power supply, but each stage must be decoupled as shown in the wiring diagram. C5, C6, R4 for the oscillator stage and C7, C8, R5 to the amplifier stage.

Mr Franco ,has he done our friend Mustapha a mistake in putting R5 C7 C8 in this location or it does not matter ?

[FrancoItaly]

I seem fair at first sight.

[zakari]

HI dear franco and abdo

mustefa"s pcb is mistake in pin4 of the lm358 and decoupling capacitors of display stage and...

[sakher]

Originally Posted by zakari

HI dear franco and abdo

mustefa"s pcb is mistake in pin4 of the lm358 and decoupling capacitors of display stage and...

Originally Posted by pigeon

hi all

I made the dream man version for the second time but it does not function.

help me pelase

mr. franco what i mast do now? plese help me !

[mee]

Hi mr franco
I am perfect pi detector man but i to intend mak your lrl
I think this device is good.
I have some questions?
1: in some device used 2 or 3 antenna master antenna connected to pcb to L1
But to where connected other antenna on the pcb please insert schematic for use 2 or 3 antena

2: in some device use plastic tube and make bobin with copper wire how make this bobbin

3: som people changed L1 and c10 or changed others parts but results bad to state.
What your sight? And what good change parts is better?

I need your email for send my pi detector and i have questions of you
Best regards

[FrancoItaly]

HI sakher,

You can use my original PCB for sensor stage, for display stage there is no problem, it's no critic.

Best Regards

[FrancoItaly]

Hi mee,

1 - one antenna (or more) is connected to L1/C10, this is the only input.

2- the stylus antenna is better than coil antenna, it's easier to build and by stretching it can increase sensitivity.

3 - In my opinion the original values for L1 / C10 are correct and only later (with LRL working) you can find the best possible values.

my email is "sandokan51@libero.it"

Best Regards

[mee]

Hi franco
Tanks of you
I make your both circuit LRL ( original board and with 4046)
But no one worked and not detecting my device is silent except when to rotate
Gain or threshold POT.
I don't know. Why?
What This device worked and how tests device?
Im tested with gold coin but device not actions and led is off.
This device used a transmitter board ?
Best regards
M.E.E

[FrancoItaly]

As I have said many times LRL only works with metals buried for a long time, at least a few months, also depending on soil type. It is therefore necessary to have an area where testing, burying for example of silver and waiting at least a few weeks. My lrl is a passive receiver and the oscillator does not transmit.

[mee]

Hi franco
Tanks of you
I think a lrl detector parable pi detector , detected
All metal in air or in ground.
I to understand LRL detector, detectet old metal and only in the ground.
But i seen your video in YouTube , the device detected metal in room
It is different detector?
http://youtu.be/eZUfg2kF4-Y
http://youtu.be/ib72FWjxYTw
http://youtu.be/l3nH9CG0lI8
Best regards
M.E.E

[FrancoItaly]

My LRL (as I think the other lrls) reveals not only the "phenomenon" but every other source that emits signals whose frequency (or even harmonics) falls in the input resonant frequency of the LRL. Such as mobile phones, remote controls, wireless and so on. Even in my house there are several points where the LRL is activated and this I think is the case of the video that you saw. Near radio transmitters, the LRL is virtually no use.

[folharin]

any member could post the 1 led display schematic?

[FrancoItaly]

Best Regards

[folharin]

[FrancoItaly]

This is not my PC and is not complete, however, the power stage there is only one LED and is connected between R6 and + 12V.

[abdou2014]

I DON'T USE BUZZER .