TESORO GOLDEN SABRE

[Hornbuckle]

I have compiled a metal detector on the circuit board laid out on the first page,
consumption of 60 mA when the coil is connected through the speaker is a continuous beep if you hold a coin above the coil then there are peaks at the target.

frequency coil TX 13k, the speaker is a constant buzz. in what could be the problem?

[Davor]

Tx

[Hornbuckle]

Good evening, comrades, is to begin to test the device performance?
collecting device on the PCB "Tesorro Golden sabre zelfbouw1"

where to start checking the operation of the metal detector?

[Hornbuckle]

Good evening, comrades, is to begin to test the device performance?
collecting device on the PCB "Tesorro Golden sabre zelfbouw1"

[paku]

Try Read This

[Hornbuckle]

Explain what kind of a tricky switch with a resistor 10 k?

[sdesic]

TGSL EDU (from Silverdog kit) is finally all completed and assembled with coils
RX 26 ohm 6,62mH
TX 24,9 ohm 6,02mH
wound up on jig as desribed in manual
(isolated, than wraped in mylar - conductive side out (left 1-1,5 cm blank for break in faraday cage)
and plain wire wound for shield connection for both coils and as finish one more layer of isolation tape)

connected two pots and switch
connected with usb cable to PCB folowing manual - grounded on coil and on PCB

tested on bench
I have max 8 cm on 1 EURO coin in air if I place coils together

when I switch to K2 i K3 connection I have no detection
tried pots at various positions

ballancing is not very clear for me
my voltmeter has scale for 200mV AC but I don't trust it ... no oscilloscope yet...

can someone please explain functions of switch K1,2,3 and pot DISK.
if switch is on disk pot works and if switch is on all switch is doing ...

[paku]

how to connect the cable

from VDI pcb to TGSL

on VDI Board have mark

BAT
+12V = ?

+ = ?
8V
- = ?

Y = ?
X = ?

[paku]

ok thanks guru
i will try make that coil

now i need help about connection VDI To TGSL Board how to wire that to TGSL PCB

[dfbowers]

[ATTACH]24919[/ATTACH]

This Coil Is right or wrong

Looks close to the correct number of turns if that is what you mean. Build it and let us know! Most important is that you get phasing correct as actual inductance can vary a bit. Also, your coil will be a bit heavier than normal.

Keep in mind though, if you want to build something different than what has been built and tested by many others we cannot help you much.
With that said, I have had fun building all kinds of different size coils. Most all have worked pretty well so long as I kept the inductances or phasing close to spec..

[paku]

i need help
how to connect the VDI PCB Wire On The TGSL Board
i dont no how to read schematic i just follow the picture and assemble on this forum
i try to find how to connect the wire on that bord
an i dont find all on this forum
any picture can help me how to connect that

[paku]

This Coil Is right or wrong

[paku]

Wrong!
During process of nulling you not suppose to take iron as reference at all.
Yes it is nulled in All Metal mode. But you have to take ferrite rod as reference. GEB trimmer on 1/2. Null to position where ferrite rod is almost fully rejected - just to produce occasional "cracks". Ferrite rod is 5cm long and wide and slow swings are performed about 5-10cm over coil surface during nulling. When this achieved, later fine correction is done by slice readjustment of GEB trimmer...

Speaking of coil dimensions you are presenting here...i can suggest more turns; ~150 for RX and ~140 for TX.

Cheers!

any one have make this coil its work or not

[zoomtronic]

i finished populatin pcb 4 TGSL, will post some images of ongoing build off

[paku]

any one know small size coil for TX and RX
i want make the small size coil for TGSL