Return to the archive index

Re: Wearable Construction

From: Mark Willis <>
Date: Sat, 04 Dec 1999 22:12:00 -0800

Charles J Knight wrote:
> 
> > > One note -- he mentioned that he wanted W95 capable machines,
> > > which implies a minimum of a 486/50, and preferably a machine
> > > that's a lot faster.
> >
> > Most everyone here, knows what we WANT, and it isn't always what we
> > can
> > AFFORD, darnit!  It's always either, Our Money budget won't buy us a
> 
> True.  Life is a series of compromises.  But, "with a little help from
> our
> friends" it's amazing what people can do.  OK, so I'm a Beatle's fan.

I can deal with that.  <G>

> > MicroOptical pair of glasses, or, our Battery budget won't last long
> > enough, or or or...  <G>
> 
> I'll say...I would LOVE a transparent full color display using a side lit
> holographic system.  But, I don't have $50,000 to develop it, and noone
> seems to offer anything like it at a realistic price.

I've not heard much about the Nipkow disks lately, anyone?  Those could
work for wearables, and the parts could be made on-site?

> > Win95 will definitely run on a 486DX33 with 8Mb RAM; it's quite slow
> 
> I don't know that I would use the word run.  Execute, maybe...  :-)  I've
> used it on a 486/50, and it was tolerable.

Maybe you have higher expectations than us who've run Z80's at a couple
MHz, off one 8" floppy, with 32k Ram, and eventually a whole 300 baud
modem...

> > a 386, BUT, remember - a 386 with 8Mb in the hand beats no machine
> 
> Again, I wholeheartedly agree.  But, if some of us have some old
> 486's lying around, collecting dust, there's no reason to think that he
> couldn't put them to better use elsewhere.  It's entirely plausible that
> some of us have unused Pentiums lying around too.

'Tis true!  A pentium in the hand beats the 386 <G>

> > all;  Linux is a quite good OS; part of my thought was that there
> > are
> > Linux shells that look/act a lot like Win95, something to consider.
> 
> And, with so many free apps for Linux, it might be a better choice
> overall.  I was just looking at what he originally requested, which was
> W95 machines.
> 
> > Know where Ghana is, don't want to think you're patronizing me here;
> 
> Nah...I didn't say that to patronize you.  My knowledge of geography is
> pathetic, so I assume that not *everyone* knows, offhand, where it
> is.

S'Arright, so long as <G>  The other thing I find is that so many times
we mis-understand each other anyways, it's more a "normal condition"
than we'd think, I find...

> > > We could certainly just fill up a shipping container and ship a
> > few dozen
> > > complete machines to him, with relative ease -- cost is the major
> > factor.
> 
> My thought was that our "castoffs" are probably more than adequate,
> and if he could pick up shipping, it could work for everyone.

True!  Anyone want to volunteer to be coordinator here?

> > for the hardware he wanted, I could have mis-understood...  My
> > impression, too, is that shipping isn't THAT expensive (I'd bet I
> > can
> > reasonably quickly ship a monitor & machine to Ghana from here for
> > about
> > $200 max;  Find me a usable wearable display at that price,
> > *PLEASE*!
> 
> He also said that shipping is only part of the expense of getting stuff
> into the country.  Something about the officials at the port adding an
> additional "surcharge."  ;-)

Certainly implied.  You know, if you could arrange for a news reporter
to accompany those computers through the customs area, video cameras
running, to document this wonderful happening, they might temporarily
feel "generous"...

> > > Why am I picturing something akin to a NeXT cube, as a final
> > > product?
> >
> > Haven't looked inside one, this would've been larger though.  I
> 
> The NeXT was a single processor machine -- stacking motherboards
> would produce an approximate "cube" though, and perhaps a case
> design similar to the NeXT would be workable.

I suspect this'll be a little bit larger...

> > > Of course, a passive backplane with multiple CPU cards (shades
> > > of S-100) might make a good arrangement.
> >
> > For Beowulfing, if you wanted to make custom stuff, etc.  One
> 
> I don't know much about a Beowulf cluster.  Are they linked through
> the bus, or through NICs?  If through the bus, it should be possible
> to come up with a backplane, and a right angle connector that would
> link the PC bus slots to the backplane would be easy to cobble
> together.

NICs, hopefully 100BaseT if available.  Could set up so the connectors
are all easy to get at, on the side or back?

> > I've bene offered a couple printers for good causes, may get one to
> > the
> > neighbor, but shipping those to the East Coast is pricey!
> 
> Exactly.  Actually, where is everyone located?  I know a lot of members
> are probably in the area of MIT -- I'm in Dallas, Texas.

I'm in Enumclaw, Washington State, just southeast of Seattle a ways.

> > It's really nice if all machines are of "identical" components, I've
> > learned from managing 20 machines here, too.  It makes debugging and
> > finding drivers a lot easier, frankly.  It's a nightmare to have 20
> > machines with 20 different hardware configurations, it's at least
> > nice
> > to have machines put together in a few groups of identical machines.
> 
> Yep.  And, if it was available, a custom burned CDROM backup disk
> could be used to "restore" the hard drives to identical condition.
> That's
> assuming identical machines, though.

Same disk could have several component files, alternately, pick the one
you want (Do-able from a batch file or script.)

> > I can find NICs for $1 sometimes, I've been only getting SMC cards,
> > I
> > can find a few good identical NICs here probably, if that'll help.
> > I'd
> > suggest we coordinate so he doesn't end up with a ragtag fleet of
> > patchwork machines, if possible.
> 
> We're on a listserv -- that's a good starting point.
> 
>      -- Chuck Knight

  Mark

-- 
I re-ship for small US & overseas businesses, world-wide.
(For private individuals at cost; ask.)

--
Subcription/unsubscription/info requests: send e-mail with subject of
"subscribe", "unsubscribe", or "info" to 
Wear-Hard Mailing List Archive (searchable): http://wearables.blu.org

+Previous Message in Thread | Next Message in Thread

From Wear-Hard Mailing list Archive (WH)
Maintained by R. Paul McCarty

Archive created with babymail