Not PC, but 68k and PowerPC Mac related, though I figure it still fits the thread:

68kMLA user Demik released a PCB design for a 65% keyboard using the ADB controller IC of the AppleDesign rubberdome mushboards, dubbed Design68 (GitHub repo here).

If you have a bad condition AppleDesign board, or maybe one with damage to the membrane, this is an excellent way of reusing its controller IC for something far better.
The PCB is designed to fit the Tester68 keyboard kit, which is a very cheap ($20-ish) keyboard kit from China.

Add suitable switches and keycaps to taste, and it's a lovely new mechanical ADB keyboard.
Just ISO for now, but maybe ANSI layout is possible at a later time.

Daniël Oosterhuis wrote on 2023-09-12, 06:42:

Not PC, but 68k and PowerPC Mac related, though I figure it still fits the thread: […]
Show full quote

Not PC, but 68k and PowerPC Mac related, though I figure it still fits the thread:

68kMLA user Demik released a PCB design for a 65% keyboard using the ADB controller IC of the AppleDesign rubberdome mushboards, dubbed Design68 (GitHub repo here).

If you have a bad condition AppleDesign board, or maybe one with damage to the membrane, this is an excellent way of reusing its controller IC for something far better.
The PCB is designed to fit the Tester68 keyboard kit, which is a very cheap ($20-ish) keyboard kit from China.

Add suitable switches and keycaps to taste, and it's a lovely new mechanical ADB keyboard.
Just ISO for now, but maybe ANSI layout is possible at a later time.

I've seen something like that keyboard in an LGR video