Delta Pulse

[Tepco]

Behavior of that link may vary regionally, this one is OK, i have .pdf, great job pigeon, and i will add some technical comments later. Best regard for people of Iran! (i'm half world away)

[sevar12]

Finaly bild nwe 36cm coil 32turns 0.55mm2 1,24mH 2,5Om and is better 1 euro more tnah 35cm in air now i shielded him
thaks very much

[kt315]

Finaly bild nwe 36cm coil 32turns 0.55mm2 1,24mH 2,5Om and is better 1 euro more tnah 35cm in air now i shielded him
thaks very much

although Delta Pulse is not for money but you can simply to add the sensitivity to money if will decrease strobe DELAY to 15 usec (normally Delta has 40 usec minimum).

good luck

[perzo]

detect goold in low depth

this project is very bed as well as detect goold in low depth and very noise in the air

[sevar12]

No project is good and is for big ciols no for small target for gold as KT315 say delay to 15 us may be is more sensitivity and more frequency and you gota have a good coil

[berreizeta]

PROBLEM WITH THRESHOLD AND SOUND

Hi to all,


A Problem:

- With threshold pot, all left = 0..1 -> No sound - but Detection 100% (LCD)

- With threshold in 2..4..10 = I have sound and detection = 50%... or less....

I changed BC557, NE555 and nothing at all ....., a good idea?


Regards.
Ger.

[kt315]

Hi to all,


A Problem:

- With threshold pot, all left = 0..1 -> No sound - but Detection 100% (LCD)

- With threshold in 2..4..10 = I have sound and detection = 50%... or less....

I changed BC557, NE555 and nothing at all ....., a good idea?


Regards.
Ger.

in DP THRESH works strange way... you have not be wondered it. always set/leave THRESH in middle position, or slightly left-right. only in the position S.A.T. (or autotracking) works optimally and properly. if you will be hunting and DP will work OK you can note that THRESH is not so effective as at hunting begin. it is normal, do not wonder. that is the normal SAT autotuning.

http://www.youtube.com/watch?v=3yZuOn4bc6o

[berreizeta]

Hi KT315,

My DP worked the same as yours: perfectly, with a low and deep sound, but now he has gone crazy.... looks like Maria Callas !

-> 8V2 zener, what voltage should be , in mine = 0V ¿?

Ger.

[berreizeta]

Zener solved.... Maria Callas still singing....

[Jose]

Good work Berreizeta
The LCD is posted on the forum Dom44?
thanks
Jose

[berreizeta]

Hola José,

Lo he terminado hace un par de dias, a que te refieres con el forum ??

(Google-trans):
I've done a couple of days, do you mean with the forum?

Saludos
Ger.

[Jose]

Hello Berreizeta
He asked if the LCD seen in the photo, is the version published dom44 forum. Or if other version, you are using?.
thanks
Jose

[berreizeta]

Hola José,

No encuentro ese Foro, si puedes ponme el link.

Este LCD es el mismo de teknolojibiEkibi (sin discriminación!) y ligeramente modificado para mayor facilidad de montaje.

*

I can not find this forum: Dom44, if you want to put me the link here.

This LCD is the same teknolojibiEkibi (without discrimination!) and slightly modified for easy of assembly.

[berreizeta]

Sorry José, Dom44 located! yes is the same circuit.

LCD Teknoloji Ekibi "with discrimination" ::

[Jose]

thanks Berreizeta
Here the link
http://www.geotech1.com/forums/showthread.php?t=16508