22 280 aiment

Electronics/K270

With the objective of transforming an old (but faithful) IBM Keyboard model M with its original APL2 keycaps (yum-yum!) into a wireless keyboard, I've decided to teardoawn a Logitech K270 keyboard I'd found in a recycling bin.

The internals of the K270 show 2 PCB layers, a wireless module (not Bluetooth) and a battery holder.

After scanning the 2 layers it was time to find which pads connected to which key of the keyboard. Easier said than done but after several hours I came up with a matrix showing which pins of the wireless module were linked to which keys.

I've put the wole thing in a spreadsheet which you can find here until I run out of space on the server in which case you may drop me an email requesting the "K270_matrix.ods" spreadsheet.
Here is the K270 matrix spreadsheet.

For reference, here's the layout of the 2 layers

Enjoy!