VOGONS


Clone of Amstrad's Adlib clone

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Reply 22 of 34, by Benedikt

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The first board is ready for testing!

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There was just one minor problem: I ordered flip-flops that don't match the footprint on the board and had to solder that thing on in SOJ-style.

Reply 24 of 34, by Benedikt

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The Ne558 is NOS. It should be possible to use two NE556, instead, but since this board needs vintage parts, anyway, I didn't care about that.

This should be roughly equivalent to an NE558:

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Reply 25 of 34, by matze79

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Looks good 😀

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 26 of 34, by Benedikt

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Well... the card works!

... but I didn't see this problem coming:

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I can only assume that the original card would have caused the same problem in this machine, but it's still a bit disappointing.

Reply 27 of 34, by matze79

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Hi Benedikt,

RK097G Pot will fit on your Board, there is also Mono Version.
it has optimal height to fit.
s-l300.jpg

And for the Audiojack, i also tend to use the flat ones but they will not fit all cases, so the ones used on SB128 are perfect.

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 29 of 34, by Benedikt

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Card number two. This looks much better, indeed:

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I'll leave the testing for tomorrow.

Reply 31 of 34, by Benedikt

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That's a Keystone 9200-3 DA15 bracket with additional 8mm and 7mm holes.
I had to shift the DA15 socket by a few mm to make the bracket fit, but it certainly makes things a lot easier.

Reply 32 of 34, by Benedikt

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And it fits and works!

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The card sounds a bit noisy with headphones when set to an appropriately low volume, but the background noise does not seem to get louder when you turn the volume up.

Reply 34 of 34, by Benedikt

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perhenden wrote on 2021-12-18, 20:53:
Benedikt wrote on 2020-02-02, 12:57:

And it fits and works!

Very nice! Is there a parts list available?

KiCad can generate a parts list for you, albeit without specific part numbers, because I did not specify any.
Also note that the PCB layout still contains some minor errors/insufficiencies that I never corrected, because I do not plan to build another batch.