IDX-PRO+VDI

[ossamaussama]

Your detector work on pinpoint mode so there is brocken or not connecting track in board also check 4066

[Koala]

Hello all, i just finished first version of idx from page 1, but when i plug detector into battery, i have constant weird beeeep and mpsa 13 is very hot after 4 - 5 sec. Does anyone know what can be problem? Btw, no difference with or without the coil... Thank's

Nothing should get hot or even warm. Not much to go on. Make sure everything is place the right way round.No shorts and the voltages are correct. Post some nice photos would help.

also check the voltage pin 1 and 7 of U5 should be just under 3V

[Nicolas]

Hello all
here is my version arduino with VDI

https://www.youtube.com/watch?v=rdnP0081rzs&list=PLSpmvvjyJx-5pt0hvVWeoHNWaU-L9xTE5&index=32

[CDI]

Hello all, i just finished first version of idx from page 1, but when i plug detector into battery, i have constant weird beeeep and mpsa 13 is very hot after 4 - 5 sec. Does anyone know what can be problem? Btw, no difference with or without the coil... Thank's

[golfnut]

i balance ground in disc mode by ferrite as soon as i hear cracking sound it accept both silver and zinc and go to hunt


Balance the machine over the ground your hunting. The same as any othe manual geb machine


Leave it in Disc.

[Koala]

Has anyone tried large zinc on a working detector. Not the sort of thing I have lying about. Large iron plough (plow) shear has a bit of discrimination (broken sound) even with the disc on 0 and nails still sound fine.

Would not be suprised if large zinc did not overload the detector also but can't test.

[mohandes]

matbe if the phase response of the large Zinc was like ths pic you wouldnt here it.

[ATTACH]33116[/ATTACH]

hi
can you explain more pic.regards

[Koala]

nice finds ossamaussama thanks for sharing

gives others the confidence in the IDX project

[ossamaussama]

may be but i forget ground balance using pinpoint method
i balance ground in disc mode by ferrite as soon as i hear cracking sound it accept both silver and zinc and go to hunt

i think idx is not good in ground balance in all metal non motion mode ( pin point )

may be the coil because it is home made

but i acheive 33 cm under ground ( high mineralization red colored ) for 1 euro with good sound .

[golfnut]

matbe if the phase response of the large Zinc was like ths pic you wouldnt here it.

[ossamaussama]

some idx hunts

[ossamaussama]

Thanks.......

[Koala]

Don't use a doughnut shaped piece of ferrite these fail

Done wave too close to the coil a 2" is enough.


If it almost works but you run out of adjustment on the POT. It will be the RX capacitor or null that will need adjusting

[ossamaussama]

i have strange problem with idx dd coil

after some experiment and try many capacitor values on rx
i finally can reject frite bar with pinpoint mode and discrimination mode

after using the idx i cannot reject frite in all metal pinpoint mode
but only in discrimination mode


coil is balanced with 0 volts in digital multimeter ac

detector is working good in ground but cannot balance ground

any ideas?

[6666]

Thanks
and from google translate

Hello the idea is that ohms and the mh (of the ) coil are within the ranges of the ohms (1.8 ohm and 0.590 mhz, my rx 112 ohm) to use a meter of mh...(use a meter to measure mH) I have used up to 3 different both on tx-wire measures as rx... achieving equal 45 to 50 cm for a currency... what I've noticed with my experience that no matter how many wires are used in a same coil... I've used up to 3... but respecting the rx values (ohm y mh) in and tx... did so because I did not find the wires here in my country - coil DD can be of the size that you want to...its IMPORTANT TO HAVE ON HAND A METER to read MH... SCRAPE a little enamel off the wire to measure that is VAN (value ?) giving the turns, to go looking for the values of the ohm and the mh... This DD not have tried with other reels...

There you are gtdavid