So I am planning on using a Teensy for building up a WYSE and an Apple AEK II. The Wyse is a 101 key layout and the AEK II is 105. For this I was planning on using a hand wired 10x11 matrix. I realize that I will have to get a bit creative with rows and columns.
But my biggest question is aside from GND, VCC at the USB port end and VCC, GND, and RST which leaves 26 pins left, are there any of these that simply can't be used for connecting the matrix or indicator LED's?
If the ones aside from what I listed can all be used, a 10x11 matrix plus 3 pins for LED's (correct me if I am wrong on number of pins for indicator LEDs) can be achievable and still have 2 pins leftover.
Help in this would be greatly appreciated. I am confident that I can do the physical assembly once I get details such as this sorted out.