Actually, there is very good documentation on this
keyboard, and I was considering building a tiny PIC
"black box" for this purpose - to convert PC
scancodes to the 4800 baud TTL serial that the VT320
expects. I wasn't going to convert each and every key,
just the ASCII.
--- Tony Duell <ard_at_p850ug1.demon.co.uk> wrote:
> > LK201:
> > > I found a few of the keys didn't work right on
> > > one of them. This is one of those conductive
> rubber
> > > dome keyboards (and cheap and junky ones at
> that).
>
> All the LK201s I've worked on have used membrane
> switches. But I believe
> there are several versions.
>
> > > They ask quite a bit for them on the 'net
> > > ("refurbished", usually meaning they blow the
> dirt out
> > > with compressed air).
> >
> > With the LK201, blowing out the dirt is about the
> extent of it.
> > The keyboard assembly is such that you can not
> easily disassemble
> > it to do a good cleaning.
>
> Taking it apart is easy :-). it's getting it back
> together that's the
> hard part. It's easy to remove the casing,
> electronics, and keycaps. The
> rest of it is heat-staked together. You can cut off
> the moulded-over
> parts, take off the housings, the leafsprings and
> then separate the
> layers of the membrane sandwich. But it's very hard
> to heat-stake
> together again (not enough plastic left), and the
> housings are too thin
> to drill for screws.
>
> > > I can find better PC keyboards new for around
> $4.99.
> >
> > If you mean as in 'Wintel', they are not
> compatable.
>
> Since the LK201 protocol is fairly easily available,
> I would have thought
> it would be possible to use a single-chip
> microcontroller to link a PC
> keyboard to a LK201 port. I've never tried to write
> the code, though.
>
> -tony
>
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Received on Sun Mar 17 2002 - 15:53:39 GMT