Serbian "Most Wanted"

[gurdal]

it will be very nice
https://www.resimyukle.org/i/p9mZn

[ivconic]

[sbalio1]

hi al friends tell me please what is the deference between lf347 and tl084 i see the frequence of lf347 ( 4mhz) resemble with tl084 (4mhz).

[gurdal]

Hi master ivica;
is the pcb direction correct?
with ironing I pressed.
sprint layout track list not coming out.

[ivconic]

AY

Hi master ivica;
is the pcb direction correct?
with ironing I pressed.
sprint layout track list not coming out.

[ATTACH]54010[/ATTACH]

No it is opposite.
Blue layer is ALWAYS TOP and GREEN is BOTTOM.
It is the rule. Remember it.
You reversed them.

[gurdal]

[gurdal]

Hi master ivica;

Would you check?
regards
Gurdal

[ivconic]

Hi master ivica;

Would you check?
regards
Gurdal
[ATTACH]54018[/ATTACH]
[ATTACH]54019[/ATTACH]

That's correct!
...
To give you guideline; when you start to solder components on the board...
"Yellow" components you solder on the back side, EXCEPT 7809, it is my mistake to draw it yellow instead red, mount it from the front side.
"Red" components you solder on the front side.
So to be able later to mount pcb closer to front panel.
Potentiometers are "red" but mount them through hole from the back side. Another my mistake in picking colors.
If you have doubts, before soldering put them as you think is right and make photos, post here and i will tell you.
Good job!

[gurdal]

I solder the parts in stock.
I would like support if anything goes wrong
Best regards

[ivconic]

I solder the parts in stock.
I would like support if anything goes wrong
Best regards
[ATTACH]54022[/ATTACH]

No problem.
Have you put any resin over the pcb?
Looks like you are soldering those parts on "naked" copper.
Also you'll have to put wires through the vias to connect top and bottom points.
Tedious job!

[gurdal]

hello master ivica;
I didn't put resin on the PCB
Soldered onto "bare" copper.
I ordered parts.

[ivconic]

hello master ivica;
I didn't put resin on the PCB
Soldered onto "bare" copper.
I ordered parts.

Sorry to "teach and preach" you... but that is not good practice.
In short period copper will oxidize and become very ugly.
Later on any eventual change that you'll want to make; will make your job much harder, referring soldering.
And it will become ugly mess.
You should use "lotlack" or any other kind of resin to apply on pcb, before soldering.
It serves there to protect copper from oxidation, but also to catalyze soldering process and make solder points nice and smooth.
Later on easy to desolder components, make changes etc.

[gurdal]

Sorry to "teach and preach" you... but that is not good practice.
In short period copper will oxidize and become very ugly.
Later on any eventual change that you'll want to make; will make your job much harder, referring soldering.
And it will become ugly mess.
You should use "lotlack" or any other kind of resin to apply on pcb, before soldering.
It serves there to protect copper from oxidation, but also to catalyze soldering process and make solder points nice and smooth.
Later on easy to desolder components, make changes etc.

Hi ivica usta;
I like to listen to sermons.
I am glad.
i have to listen to learn science.
temporary pcb.
fabricated pcb will be made.
we love you in the forum
Best regards

[ivconic]

Hi ivica usta;
I like to listen to sermons.
I am glad.
i have to listen to learn science.
temporary pcb.
fabricated pcb will be made.
we love you in the forum
Best regards

Ok, i understand, it is just prototype.
Cheers!

[gurdal]

some component arrived.
I'll make an in-hole coating with a 0.50 drill bit.
other parts arrive 1-2 days later.
I think I will provide the test within the scope of the weekend pandemic.