[sdiy] usb keyboard matrix hack

[Dave Krooshof]

The 4016 was what I was looking for, but conveiniently enough, I found out
that the USB keyboard chip is happy with a NAND in stead of a switch as well.
Good! Got tons of those, so I can spend the night soldering.

But problems are only solved one at the time....
Next issue is: The NANDs I have (I have a lot, I tried different types)
want to have a real zero on the input and assume a 1 if the pin is 
not connected.
The switches in my joystick are just simple (but VERY rugged) on/off switches.

How would you suggest throwing the voltage to 0 when the switch is off?


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groets,

_          >^v<        _

website http://www.dendriet.nl