[sdiy] keyboard scaning matrix survey

[Rainer Buchty]

>Has anyone ever seen keyboard diode matrix organized in different way
>than 8 x <something>? Say 8x8 for 61-key, 2x8x8 for velocity sensitive
>61-keys etc.

Not for diode matrix. But here[1] the keys get mapped to 4 counter 
lines.

[1] Ensoniq Polypressure Keyboard
http://wwwbode.cs.tum.edu/~buchty/ensoniq/schematics/sq80/sq80-kbd-lower.jpg
http://wwwbode.cs.tum.edu/~buchty/ensoniq/schematics/sq80/sq80-kbd-upper.jpg
http://wwwbode.cs.tum.edu/~buchty/ensoniq/schematics/sq80/sq80-kpc.jpg

Rainer