Atom Colour Board Thread

[AndyGarton]

Thanks, but the words “vintage” and “untested” scared me off! I’m really looking for one of the modern day versions, it looks like they’re no longer being made perhaps?

[aerobaticant]

Hi folks,

I was wondering what happened to this project as the thread appears to have fizzled out.
I'm interested in making a colour board / noise killer myself and Phill's board looks great.
Were the board designs ever published? I haven't found them.

One change I might make would be to use a PLCC version of the CPLD (I have a few lying around ) in a through-hole socket to aid DIY assembly for those less skilled in SMD assembly.

[joshua]

can anyone shine a light on this ;

sinclair connect to rgb2hdmi ?

i tried the wiki , but could not find the way to hook up a sinclair ql / zx81 / zx spectrum /sx spectrum 128 / commodore 64 commodore 128 to the rgb2hdmi .

i have the iss5 main pcb , but what else do i need , and how to hook them up .


regards,

joshua

[digidave]

Hope this is the right thread for my first post. I've got an Atom with Acorn Colour board and I want to take RGB output from PL4.
I see that pin 9/10 are composite/0v but I've searched all over and can't find pinouts for the 6 lines I need for RGB (and, by default, which 2 lines I don't need). I've seen plenty of posts where people say they've wired a BBC-type 6 pin DIN connector (which is what I want to do) but I just need pin numbers for R/G/B/5v/GND/sync. Can anyone fill me in, please? Thanks!

BTW, apart from the obvious quality reasons, I need to use RGB because the UHF display fades out as the Atom heats up (heatsink) after 5 minutes or so.
Can anyone suggest from your experience - is this likely to be due to my 9v 3A unregulated PSU, capacitors (not re-capped yet) or something else?

[hoglet]

Hope this is the right thread for my first post. I've got an Atom with Acorn Colour board and I want to take RGB output from PL4.
I see that pin 9/10 are composite/0v but I've searched all over and can't find pinouts for the 6 lines I need for RGB (and, by default, which 2 lines I don't need). I've seen plenty of posts where people say they've wired a BBC-type 6 pin DIN connector (which is what I want to do) but I just need pin numbers for R/G/B/5v/GND/sync. Can anyone fill me in, please? Thanks!

You get the R/G/B/S signals directly from the colour board, as PL4 is not designed to carry R/G/B/S.

Can you post a photo of your colour board, so we can see what type you have?

Dave

[digidave]

Thanks - I'll post that shortly, That explains why I couldn't find the pinouts anywhere!

[digidave]

Sorry for the delay. Here's my board pic:

[digidave]

Is anyone able to tell me where to draw R/G/B/S lines from, please?

[Multiwizard]

Is anyone able to tell me where to draw R/G/B/S lines from, please?

It's written on the pcb itself...

[oss003]

The RGB connections are located at the top left of the Colour board and the Sync on the top middle:

And you can find a manual here: https://site.acornatom.nl/atom_handleid ... manual.pdf

Greetings
Kees

[digidave]

Fantastic. Veel bedankt, meneer!
Groetjes,
David