very nice!!!! really clever build, kudos!

Ooh... Nice. I wouldn't mind having one of those actually 😁

Thank you guys! This is a fairly nice and working prototype. I like the way it saves space outside the box, but there's a lot to be improved.
1) If I ever make more, I'll use taller jack (vertical, not horizontal) that would fit the case better, maybe even two jacks in parallel - this thing needs a backplate and a shitty network card's backplate is one of the best options. But if the opening is larger than needed, a second jack would be nice to fill the gap and add a little more options.
2) LPT connector. As I said, the pinout is wrong 😀
3) There are ways of making the same board more compact.
4) I would love to add a simple noise filter that can be disabled by jumpers. I love the way the "original' covox sounds, but some filtering would be nice 😀

On the other hand, I would only "perfect" the design if I was going to produce them commercially in small quantities. But given the shipment costs and how often packages from Russia disappear, there is a) not much to be earned b) lots of troubles.

Nice one! LPT pinouts on motherboard headers don't seem to be standard, I've seen at least two different pinouts on different boards.

bjt wrote:

Nice one! LPT pinouts on motherboard headers don't seem to be standard, I've seen at least two different pinouts on different boards.

On my board (Acer AP43) the pinout is standard:

1 13
2 14
3 15
4 16
.....

But the numbers around it say that it's rather

1 2
3 4
5 6
7 8
....

😀

You'd think you could just bypass the LPT and use some simple 74xx series logic to decode the address together with a buffer to latch the latest data, which is basically all a parallel port is on an old machine I'd reckon.
Someone go make a nice PCB 😀

I wonder if anyone wrote a driver for Windows XP and later... making some records of modern games would be interesting.

Build a batch and have a member in the EU ship them piecemeal.