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Re: newbie help.

From:
Date: Tue, 11 Feb 2003 20:41:08 -0800 (PST)

On Mon, 10 Feb 2003, Jeremy wrote:

 Hello, Jeremy. I am new to building these types of machines also.

> can't seem to find a source or a price on this. Anyone know where
> to get one and how much it will run me?

 I thought it could be useful if I tell you what my system will be made of 
as I will have to rely on off the shelf parts as I've got no hw hacking 
skills at the moment.

 Some of these parts are pretty spendy... I'd been saving up for a 
lightweight laptop until I decided just to build my own and then 
discovered wearables.

CPU module: Lippert Cool RoadRunnerII 
http://www.emjembedded.com/products/single/coolroadr.html
With 256mb ram and cable set - $700

cardbus module (yet to purchase)
http://www.advantech.com/estore/products/model.asp?Category_ID=1-9B19R&ct=EC
$152

Display: Micro-optical SV3 
http://www.microopticalcorp.com/products.html
$999

Storage: As much flash as I can afford (probably 512mb). I will mostly run 
off of this because a HD is too fragile. What happens the first time I 
have to run while I am wearing it?

I do however have a 30G laptop drive that I will use on special occasions 
when I need more storage.

I will also have a wifi card and GPS attached.

> with my current input/output hardware (keyboard/crt). Then I will get
> the twiddler so I can practice input.. then last purchase the monocular.

My input device will be the Twiddler1, because it was free. I have 
unfortunately had a lot of difficulty getting the user space drivers to 
work. (Any ideas?) I just can't afford a Twiddler2 after buying the other 
stuff. I've also seen other ideas for more ergonomic input devices, but 
that comes when I am done with the rest.

Alternate input devices for when I am not walking about: USB flexible kb
http://store.yahoo.com/grandtec/minivikusb.html
got it for $26 off ebay

USB optical mini-mouse, Kensington.
$20 at CompUSA

> My other question revolves around the power supply. I am not sure as to
> what is needed to make this thing work off of batteries. Any help
> would be greatly appreciated. I am excited to get started.

This is what is hanging me up also. A couple weekends ago I decided to go 
through every relevant thread in the list archive 
(http://wearables.blu.org/news.html - invaluable), got halfway through 
when I found this page: http://www.maxim-ic.com/evkit.cfm/pline_id/9

Most of those aren't appropriate of course. I found these to look 
promising so far and are complete, minus case. Have no idea about cost or 
form factor:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2415
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1680
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3562

And of course there's the datel IC, and all the other good ideas that have 
been posted here.

I am still keeping an eye out for how I will hw monitor this and how to 
secure the batteries, and all in a form factor that can be put in a 
pocket. Sometimes I think I am asking the impossible. :) I am figuring on 
using camcorder batteries, as the charger is easy to come by.

Although the CRRII doesn't officially require a fan, I've realized it will 
require one when running in a case. I hope to find a fan that runs 
adequately on 5v and perhaps have the case be made out of metal or 
something. I haven't gotten to this stage yet. I want this machine to be 
able to be put in a variety of things, like you might with a cdplayer or 
walkman. Pockets when it's cold out, fanny pack during summer, or perhaps 
something like this http://www.eholster.com/e-holster/euro.html .

Hope this helps.

-- 
~phoo~

May the Google be with you.

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