So, I've now accumulated several M0110s, and am in the middle of a
classic Lowpoly mod with one of them. But since I have a couple of parts boards left over, I want to restore one as a TMK-driven USB board, but keeping the PCB (similar to what
hasu did with his Macway board).
A question I have right off the top: is the matrix design of the PCB what's allowing the board to skip diodes? I'm guessing a clever design keeps ghosting from happening, but I don't want to make an assumption.
So, here's a PCB I harvested from for my Lowpoly mod.
Like many keyboards of this era, it's using an Intel 8021
8048.pdf (7010.9 kB - downloaded 157 times.) as its controller. Thankfully, it's a socketed DIP and not board-mounted so I can remove the chip but keep the socket for wiring and figuring out the PCB matrix without having to trace the PCB traces by hand. I'll have to wire up a Teensy with TMK and attach the data lines of the Teensy to the data lines on the socket for the 8021 (discovered in the next-to-last page of the datasheet PDF posted earler).
I'll report back once I make some progress.
