PIM-2 Dijital Pulse İndüksiyon Metal Dedektörü

[VECTROUM]

Hello to all
I want your help please!
I have constructed the version v5 of this detector and I have problem.
When I turn on the detector it stays on for 30 seconds and then the screen goes on and off for several times and after that when turn on no sound and the screen is blank.
It turns on again after an hour and so.
I have checked the pcd and components and everything is correct.
Please help.

Thank you in advance.

[sewo74]

Hello to all
I want your help please!
I have constructed the version v5 of this detector and I have problem.
When I turn on the detector it stays on for 30 seconds and then the screen goes on and off for several times and after that when turn on no sound and the screen is blank.
It turns on again after an hour and so.
I have checked the pcd and components and everything is correct.
Please help.

Thank you in advance.

HELLO Do you see the normal message on the screen when pin2 is opened?
what kind of coil should be 3.3 ohms and 5volt is important if you run it with a small 12volt it will not work, check the screen links?

[sewo74]

if there is no connection and coil error, re-install atmega8 pin2 is a good working product, there may be a printing error on the plate, check thoroughly, copper paths may be broken, try again, type again,so I think copper wire thin and maybe problem in  your board ,,so can you load picture ?board top side and bottom side
we examine with you together ,,
best regards

[VECTROUM]

Thank you for your response.

Yes normal message pops up in screen when open.
But not every time.
Some times it starts ok but after a minute or so it restarts
And some weird symbols appear in screen.
I have checked all components many times without any good result.
Coil is 3.6 ohm.
I run it with 12v battery and a 12v stabilizer (what type of battery do I need?) .
Copper tracks are checked for continuity and everything was OK.
I will upload pictures for you to see.

Thank you again.

[sewo74]

Thank you for your response.

Yes normal message pops up in screen when open.
But not every time.
Some times it starts ok but after a minute or so it restarts
And some weird symbols appear in screen.
I have checked all components many times without any good result.
Coil is 3.6 ohm.
I run it with 12v battery and a 12v stabilizer (what type of battery do I need?) .
Copper tracks are checked for continuity and everything was OK.
I will upload pictures for you to see.

Thank you again.

Hİ
12dc voltage minimum ;2amp or 1.5 amper must be so ı saw similar problem  in my pim2 and I use lituim batery pack 16volt 7amp now ,but your problem diffrent we will check your board ,ok ,your welcome

[VECTROUM]

Üye Olmadan Linkleri Göremezsiniz. Üye Olun veya Giriş Yapın

Thnak you.

[sewo74]

Üye Olmadan Linkleri Göremezsiniz. Üye Olun veya Giriş Yapın

Thnak you.

not open  sir ,,

[sewo74]

you can use print screen gif or png with pc uploaded directly

[VECTROUM]

Please check attachement.

[sewo74]

Please check attachement.

I saw afew wrong so firstly clean up board because very dirty ,and check again cooper wire  ,
clean very important all circuits you can use alcohol or etc , firstly later check again looking my gif ,,please ,,  goodluck

[VECTROUM]

Hello

I cleaned and checked agian the pcb.
Everything you pointed in your .gif is not a problem, there is not short circuit anewhere and the copper tracks continuity is ok.
My pcb looks like that because of light on camera.

[sewo74]

Hello

I cleaned and checked agian the pcb.
Everything you pointed in your .gif is not a problem, there is not short circuit anewhere and the copper tracks continuity is ok.
My pcb looks like that because of light on camera.

hi again You must try load program hex and eproom for atmega 8  ,and  check 4504 ıc pin out 6,7 ,with phone hear it then ""dııır"" and atmega 8 pin 23,or 22 must hear ""dıııııır ""sound  this test for pulse ,,
so ıf you have osciloskope ,see wave form in there ,,ok ı look my on board this evening all voltage output for you ,,ı will write tomorrow ,,sir thanks

[VECTROUM]

Here are osciliscope measurements of mc14504 pin 6,7 and atmega8 pin 22, 23.

Thank you.

[VECTROUM]

Pin 23.

[VECTROUM]

Pin 6.