Declaring interest in REV G board ( abandoned see REV H1)

[exxos]

As mentioned in the other thread some people want to spend of the boards done with all the current fixes. This basically is the REV G board. https://www.exxosforum.co.uk/forum/viewt ... =19&t=1230

Though as discussed in this thread, there would likely be a few other changes as well..https://www.exxosforum.co.uk/forum/viewt ... 419#p15328

As mentioned in the other thread, this board still needs a lot of work to be done yet, so we could literally be looking around 3-6 months before it sees the light of day.

20 PCB's run would likely cost about £40 per board. I don't think it will be any higher cost wise, but its hard to exactly tell at this point.

[PhilC]

With the other fixes you've talked about, I'd have two please.

[PaulJ]

As mentioned in the other thread some people want to spend of the boards done with all the current fixes. This basically is the REV G board. https://www.exxosforum.co.uk/forum/viewt ... =19&t=1230

Though as discussed in this thread, there would likely be a few other changes as well..https://www.exxosforum.co.uk/forum/viewt ... 419#p15328

As mentioned in the other thread, this board still needs a lot of work to be done yet, so we could literally be looking around 3-6 months before it sees the light of day.

20 PCB's run would likely cost about £40 per board. I don't think it will be any higher cost wise, but its hard to exactly tell at this point.

Exxos, I'll commit to a couple. Maybe more. I believe I could make a mouser parts list since I ordered most of the parts for the current board from them. Maybe there's a capability to upload a parts list? This would be a good intermediate step since the next board will once again be a prototype and require some unfit*kit boards as well as debug.

[exxos]

I believe I could make a mouser parts list since I ordered most of the parts for the current board from them. Maybe there's a capability to upload a parts list?

Yes by all means do that.. Parts list can be done with the "code" button, or uploaded as a text file (or zipped file) if neither work I will have to change the forum permissions the file attachments..

This would be a good intermediate step since the next board will once again be a prototype and require some unfit*kit boards as well as debug.

I am hoping it won't need any un-f*ck boards..

But like I said, the REV G schematic does still need checking to make sure all the modifications are actually done and done correctly..

Updating the schematic with other changes should not really take that long.. ( I could probably do this some point before xmas, though I'm getting busy with my day job at the moment, so my free time is currently going down)

I may actually spin that as a REV H and should have the video DAC on it etc.. The REV G was literally just the current board with all the fixes.. So new changes should probably be a REV H.. In any case it doesn't really matter I guess... But in any case, the parts list will be slightly different in the REV H.. There will be no RGB driver section for example.

[PaulJ]

I believe I could make a mouser parts list since I ordered most of the parts for the current board from them. Maybe there's a capability to upload a parts list?

Yes by all means do that.. Parts list can be done with the "code" button, or uploaded as a text file (or zipped file) if neither work I will have to change the forum permissions the file attachments..

This would be a good intermediate step since the next board will once again be a prototype and require some unfit*kit boards as well as debug.

I am hoping it won't need any un-f*ck boards..

But like I said, the REV G schematic does still need checking to make sure all the modifications are actually done and done correctly..

Updating the schematic with other changes should not really take that long.. ( I could probably do this some point before xmas, though I'm getting busy with my day job at the moment, so my free time is currently going down)

I may actually spin that as a REV H and should have the video DAC on it etc.. The REV G was literally just the current board with all the fixes.. So new changes should probably be a REV H.. In any case it doesn't really matter I guess... But in any case, the parts list will be slightly different in the REV H.. There will be no RGB driver section for example.

Exxos, I'll work on a preliminary mouser parts list and finalize when you have a layout. Let me know when you have the layout and I will check the changes to hopefully catch any issues before you spin the boards.

[exxos]

REV G so far..

I actually repositioned the connectors, but after the un-f*ck changes some of them moved, so I need to relocate them again.. but in theory the PSU & floppy holes *should* pretty close now, at least as best as I can get them without having the PCB made.

Of course the midi connectors and cartridges locations should be fixed as pre REV G changes... https://www.exxosforum.co.uk/forum/viewt ... =19&t=1230

Of course there has been other stuff added like missing resistors and mono buffer since (parts looking out of place) ...

1.png

[rpineau]

What I do to check for hole and connector is to print it on paper (probably multi-page in this case) .. a lot cheaper than getting PCBs made and realizing the hole are not where they should be :)

[exxos]

What I do to check for hole and connector is to print it on paper (probably multi-page in this case) .. a lot cheaper than getting PCBs made and realizing the hole are not where they should be :)

Yeah that's what I been doing. Did take like 30 sheets to to the PSU holes.

[kodak80]

I would be up for two

[PaulJ]

I'll check the fixes on the original board against the rev G schematic.