PCB 326298 "replica"

Hallo Alle

Ich brauche ein paar Meinungen.

Ich habe ein 326298 Board von einem "Silverlabel". Nur der board. Keine Chips

Wie viel Gebrauch wird es sein, wenn ich versuchte, eine Replika zu erstellen?

Ich habe schon den Schema in Eagle und die meisten Komponenten in einer Stückliste

Deutsch ist nicht meine Muttersprache, aber ich hoffe, Sie bekommen die Idee

So far i just thought that i would start with the first board as i assume that much of the schematic will be the same for all the boards

The nice thing with eagle is that the schematic dictate the board connections, so once you have that correct you can start placing the components and then connecting them

What i did the with board i have is to take everything off and use compressed air to get the molten solder out of all the holes. Then i spent a great amount of time to clean the board. Mostly using alcohol but for some of the very old dirt i had to use acetone

But before i started all of this i took at lot of pictures so i can see what goes where

i plan to import a picture of the board in eagle and use that to draw the connections so that the components are placed precise the same and that the connections are also in the same place

everything will be published here: https://github.com/boelle/C64-Schematics-Boards

so far its just pictures and the eagle schematic. but there are also a txt file with a link to the BOM. and copies of what schematic in the programmers manual.

but most of the work was done by Ruud. I have just double and tripple checked his work and adjusted a few things

other boards... hmm... why not if someone has a board i can use as a template... but let me get this one done first... since its a big board i will have to pay for a months subscription of eagle so i can go bigger than 100*80mm

I will go with eagle as the schematic is already done. And i will only support them for a month.

After that they dont get money from me

But PLEASE let us keep on topic and not turn this in to a religion like war. ie. this post was not meant to be about what program to use and why. We each belive in our version of the invisble man in the sky

I will

I'm also building a 3d printer and that will have to be done first

At some point i will need help to figure the values of the last few bits on the BOM

one of them are the line filter at the power input. some say just skip it and put in jumper but then there would not be much "replica" about it

I do have one since it was on the board when i got it, but i have no clue about its value.

for everyone: i do undertand german reasonble well, but my grammar is not so good. If you are not good at writing english then just reply in german
Für alle: ich mache deutsches Recht, aber meine Grammatik ist nicht so gut. Wenn Sie nicht gut sind, Englisch zu schreiben, dann antworten Sie einfach auf Deutsch.

"Better go for a newer board like 250425 or 250466..."

i will get to those also, but i wanted to start from the beginning or close to the beginning

The 326298 i have is a rev A

My reason for starting so far back is to try and catch the difference and learn/figure why the changes where made. So a great deal of it was the learning part of it

Of course collectors will want to the real thing. And some will just go for the "reloaded". My aim was to learn and at the same time publish everything so that people can make one if they want to

But also this work could be used as a modern reference tool as every track and connection will be checked many times over

you could say that

The question in you head is proberly: "Why does he spend so much time on this?"

The answer is simple, i'm homegoing and have applied for a pension. At the age of 40 i have plenty on time on my hands and need to keep myself "in gear" or i would go insane

That i do

https://docs.google. com/spreadsheets/d/1Gl0Q71u6fKLPRA9HQiSG8-xY8tPweMwXuy_UGQ1Iayo/edit?usp=sharing

thats the link to the BOM... you need to remove the space before "COM"

Of course its possible

And i'm amazed that nearly 95% or so of all the components can be bought new and only a very few need to be used

I have decided to split up the board in squares 100*80mm so i could get started on the first one without paying.

I then print each square on paper and place it on top of the board and use a needle to poke through the paper and check if the components are placed in the correct spot. there is stil a small margin of error but i plan to get it printed on a transparent film once all components are complete

once each square is done i will make a new tab on the google doc and note down all components in that square.

the first tab will then collect numbers from the others and sum them up

it will take roughly 8 weeks just to get the components placed correctly, after that all the connections has to be made