First I had to make the physical adapter. Luckily the price+shipping for teensy boards is *just* below the tax limit so they are still affordable even in UK. My experience with electronics and soldering consists mainly in having watched my father doing this kind of stuff (a long, looong time ago). Surprisingly, however, even though the holes on the teensy board are scarily tiny I managed to connect all wires with only one retry. It doesn't look pretty but it works.
Uploading the firmware was a breeze, following soarer's instructions. Now I had a working XT Model F, however, with a layout that I found really hard to get used to. Fortunately though, remapping keys is fairly straightforward with soarer's firmware. The keys from a Model M work fine in the F, so I could just use some Model M spares to get the layout I wanted. This is the "pseudo-tenkeyless" layout I came up with:
Suggestions for what to use the keys around the top right corner for are welcome. Extra points if someone has an idea how to get a 'meta' key to replace Caps Lock with

And here's the corresponding bit of configuration for the firmware:
Code: Select all
ifset set1
remapblock
BACK_QUOTE BACKSLASH
BACKSLASH EUROPE_2
PAD_ASTERIX BACK_QUOTE
PAD_1 LEFT
PAD_2 DOWN
PAD_3 RIGHT
PAD_4 END
PAD_5 UP
PAD_6 PAGE_DOWN
PAD_7 HOME
PAD_9 PAGE_UP
endblock