Sporniket's log on hardware stuff

[exxos]

Impressive!

[sporniket]

Thanks

The PCB representations from the service manual are helpfull, even if it is less accurate than I hoped. At the very least, I have a loose direct visual guide, meaning less instead of switching back and forth between kicad and visual references.

[Badwolf]

Impressive!

I concur!

Sure to be an excellent resource.

BW

[sporniket]

This month step... I could put the eproms and the cartridge port together, even if the cartridge port seems to be a little bit cramped...

subsheet_103-U2-3-4-5-6-7-EPROMs ; J1-Cartridge port.png (425.16 KiB) Viewed 1715 times

[Badwolf]

...even if the cartridge port seems to be a little bit cramped...

That's your controversial portrait A4 layout!

One of the first things I normally do on a new project is change the schematic page size to A3.

BW

[sporniket]

One of my goal is to use A4, to print it at home without the need to assemble. (and at first, I wanted to work on A5, printed on A4, to have big text for those of us that are presbyopic -me included-)

[Badwolf]

One of my goal is to use A4, to print it at home without the need to assemble. (and at first, I wanted to work on A5, printed on A4, to have big text for those of us that are presbyopic -me included-)

Fair enough. I design on A3 then print on A4 as when I'm assembling stuff I'll have my magna-glasses on anyway

BW

[sporniket]

This month I give a little bit of love to my STe. After giving it a new kind of power supply in the shape of a USB-C Power delivery charger, I made a quick and dirty game controller on a cheap prototype board, so that I can play some games a little.

Well, it was so quick and dirty that I had to fix it two times (second times because I snipped the wrong wires at first... anyway here is a reminder of how the ports are wired, and how a joystick should be wired.

2022-11-12--00-joystick-mouse-ports-pinout.jpg (258.46 KiB) Viewed 1602 times

The top view, don't pay attention to the resistors, it was an uneeded pull that I had to finally snip away (that was the first fix, with exchanging VCC and GND...)

2022-11-12--01-top-view.jpg (215.36 KiB) Viewed 1602 times

The bottom view

2022-11-12--02-bottom-view.jpg (310.38 KiB) Viewed 1602 times

Tested and finally works with the STe remake of Lotus, I will get a disk image of rick dangerous now.

[sporniket]

Atari ST schematic and motherboard recreation update : the ROMs are in place, I have put all the trace I could do with certainty or "not too much guess". The left side of the reference board scan is full of faint/erased traces.

2022-11-20--00-routing.png (89.84 KiB) Viewed 1552 times

2022-11-20--01-top-side.jpg (85.56 KiB) Viewed 1552 times

2022-11-20--02-bottom-side.jpg (60.52 KiB) Viewed 1552 times

[sporniket]

Now that the remake of the RSVE's PCB is done, I am back to the remake of the 260/520 ST main board schematics and PCB...

This week I migrated my workstation to the latest LTS Ubuntu, as a consequence this project is now using Kicad 6.

subsheet_104-U12-GLUE.png (261.98 KiB) Viewed 1425 times