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RE: Building my first wearable

Charles
I know there are a lot of guys over on the HPLX-L list that could probably
not only answer technical questions about the HPLX palmtop but also would be
interested in your idea of turning the HPLX into a wearable. I know I would
love to turn my hp200lx into one if a simple solution could reached. May I
forward your message over there and see what they can come up with?
Karl Nelson

-----Original Message-----
From: Charles J Knight [mailto:]
Sent: Saturday, July 03, 1999 4:21 PM
To: 
Subject: Building my first wearable

I have an old HP95LX palmtop, and it's got the dreaded "screen
blanking" problem.  Well, I've found a similar LCD in BGMicro's
ad, and I'll be trying to interface it to the unit...it'd be nice if I
could
get it working again, consistently.  It's cheap enough to toss, if
I can't get the new LCD interfaced.

First off, does anyone know if there's a fix for the display?  MIT
guys?  It's a Hitachi LCD sandwich...all surface mount with a
HUGE number of parallel traces -- the blanking problem acts
like a broken trace or cold solder joint.  Anyone?

Or, perhaps, does anyone have a broken old 95LX, with a working
screen?  Something I could scavenge from?

Anyway, down to business.  I want to build my first wearable, and
I have my old 95LX as a donor.  It's an XT compliant DOS "laptop"
with a motherboard smaller than a PC Card, and which runs on 2
AA batteries.  It also provides both wired and wireless serial I/O.

The keyboard, built into the case, is probably a matrix which I could
"reengineer" with a little work.  Its "connector" is a linear series of
"pads" which align when the case is closed.  Shouldn't be too hard to
work up a solution.  The stock keyboard is standard QWERTY,
but a bit bulky for a wearable solution, but small enough to be
difficult to touch type on.

While it's a limited system, it also has a suite of built in apps which
work quite well on its hardware, and which export standard formats.

Has anyone made a wearable out of one of these?  It could literally
be pager sized if done right, with only a few external peripherals like
a keyboard and a display.

     -- Chuck Knight

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