I was cleaning up my desk a little, and found all the various incarnations of the adapter board, so I lined them all up for a picture. It's a little embarrassing it took me so many iterations (and so long) to get things to where they are. But maybe sharing my learning process can get other people involved, and take the leap on some of their own projects.



On the far left, the initial hand wired adapter for pre-ADB keyboard to PS2 keyboard.

Then the first PCB without any connectors.

Then connectors added.

Then realized I didn't need those level converters after all, and wired them out.

Then revised the PCB to remove the level converters and add pre-ADB and PS2 mouse connectors. The pre-ADB mouse connector was also wired backwards.

Finally, fixed the pre-ADB mouse wiring and added the ADB connector.

Each PCB revision takes about 3-4 weeks of shipping time, during which I can work on the software side of things to fix bugs or add any support needed for the new PCB revision, and each PCB order is for about 10 boards. So, I've got 8 or 9 of each of the older revisions sitting around, probably never to be used.

And that's the course of the project since the initial posting back in June. These projects take a lot of time.