20210511 Wyse PC - jsheradin/kb_adventures GitHub Wiki

I'm not able to find much documentation about this board but it has Alps green switches with very nice doubleshot ABS Alps Electric caps.

It had some bad water damage in a few places which required several switch plates to be replaced. The mounting plate fortunately had enough meat left that it could be sanded back to bare metal and painted with a rust inhibiting paint.

The keyboard's controller and protocol is implemented entirely with discrete logic. Every key can be individually scanned with a unique pair of parallel address and a single output pin. One address selects the column to drive, the other selects the row to output. You can treat the two addresses as two halves of a single large address. Iterating through the large address will still cover all combinations of the individual small addresses.

Soarer's Controller firmware running on a Teensy 2.0 is able to talk to it just fine. It's configured as an enormous single row keyboard with a mux to select the "column". The "column" select is in actuallity just iterating through the whole large address and driving the output pin which Soarer's sees as the only row.