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Re: Lizzy Vs WearComp6

From:
Date: Sun, 4 Oct 1998 13:10:00 -0400 (EDT)

> Can anyone comment on good or bad points of the MIT Lizzy Vs. the
> WearComp6? I found the documentation for the wearcomp6 more consise,
> but the compnents seem very similar. Have I missed something?
> 
> WearComp6 http://n1nlf-1.eecg.toronto.edu/wearhow/index.html
> Lizzy http://lcs.www.media.mit.edu/projects/wearables/lizzy/index.html
> -- 
> Binary Bar - Australia's first free access internet bar/cafe/gallery.

The main difference is the output media.  Platt's design (adopted by MIT)
uses a Private Eye as the output device, while WearComp6 uses VGA as output,
with instructions for NTSC as well as VGA.

It was felt that WearComp6 would apply to a broader range of users,
since the Private Eye display is no longer available.

The only other really important difference is the power supply portion.
WearComp6 was based on a more efficient power supply which is also smaller
in size.  This reduced size is possible because the greater efficiency
means less heat dissipation.  Less heat dissipation means smaller size.
Moreover, rather than leaving it flop around inside the box, WearComp6
suggests it be heatsinked to the box.  Not that the heatsink is really
necessary, but at the very least, it makes for a neater more reliable design.

WearComp6 also suggests the hard drive be tied down rather than flop
around in the box.

WearComp6 is based on more than 20 years experience designing and building
WearComp systems, and has a history of other successes and failures behind
it.  In subtle ways, the WearComp6 suggestions come from many years of
tinkering, and you will likely find that these are very hepful and time
saving.

Also WearComp6 http://wearcam.org/wearhow/index.html has been published
in Circuit Cellar, so it has stood the test of review by experts in the
field, during review of the article for publication.

wearcam.org gets quite a bit of traffic, so if there is ever trouble
getting to it from wearcam.org, you can also try:
http://wearcam.org/wearhow/index.html
http://wearcomp.org/wearhow/index.html
http://hi.eecg.toronto.edu/wearhow/index.html
http://barugon.eecg.toronto.edu/temp/wearhow/index.html

Steve

Prof. Steve Mann
University of Toronto
Department of Electrical and Computer Engineering

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