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Topic: Parallax "PS/2 Mini-Keyboard" (Read 1 time) previous topic - next topic

glenz

Hello,     Has anyone else tried interfacing this keyboard with Arduino? If so I'd like to hear about their experience.
I could read the key codes it puts out "right out of the box", but there are some serious problems with them. Most serious is that there are eight pairs of keys that give the same code e.g. both the '[' key and the 'T' key output a 0x74 . None of the keys send a Break code, and the codes sent do not follow PS/2 protocol.
  Parallax has a disclaimer in their description of the product saying that it is "designed for use with the Parallax Propeller Chip" but I can't see how any host could distinguish between keys that send the same key code. What am I missing here?

GaryP

Do you have a link for the product?

Cheers,
Kari
The only law for me; Ohms Law: U=R*I       P=U*I
Note to self: "Damn! Why don't you just fix it!!!"

glenz


GaryP

The only law for me; Ohms Law: U=R*I       P=U*I
Note to self: "Damn! Why don't you just fix it!!!"

glenz

Thanks Kari for that.   I used that library (PS2Keyboard.h  and .cpp) to handle the interface to the keyboard and it worked just fine. I had no trouble receiving the key codes, but if several keys share some of the codes, then the keyboard is unusable, unless there is some work-around that I can't imagine.  =(
Glen

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