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RE: wearable development pics

> -----Original Message-----
> From: Rick Jones [mailto:]
> --- Michael <> wrote:
> > > > And how do you deal with static?
> > > 
> > > With the dry climate here I have wondered about
> > > that..so far I haven't seen any problems (but I
> > > haven't done much with it yet).  I'm certainly all
> > > ears for tips on dealing with static.
> > 
> > Hm...maybe you could mount some thin aluminum sheets
> > around the inside of 
> > the case.
> 
> I could easily run aluminum along the bottom and up
> the narrow sides of the case.  The long sides would be
> difficult because of the I/O.  The top would be simple
> for above the daughterboard, and provided the IBM
> laptop drive has no qualms with being against
> aluminum.. most likely no problem there either.
> 
> > Nice design, btw, I like it.
> 
> Thanks. I was actually looking for a commercial
> electronic housing originally.. but for an initial
> building - 74 cents an a dremel equivalent is hard to
> pass up.
> 
> just an idea.. if I lined the inside of the case with
> aluminum foil (gluing at points) would this be
> satisfactory static protection?  Or does the actual
> volume(capacity) of aluminum create the protection?

I would avoid using aluminum foil around electronics. I built
an aluminum case for my wearable and I had a hard time avoiding
shorting connections when wires got loose or pins got too close
to the edges. Since you're generally trying to pack electronics
as close as possible inside a wearable case you want to avoid
conductive surfaces as much as possible.

Generally the idea of anti-static protection for devices is
to have a large conductive and *high resistance* material which
will safely dissipate static without causing shorts. I think
using an anti-static spray would work better.

Also, if the case tends to accumulate static when it's rubbed
or moves against your clothing you might focus on the outside
of the case. Maybe just a coat of paint would eliminate most
static.

-Paul

R. Paul McCarty
Vitronics Inc
tel: (732) 389-0244 x30
fax: (732) 544-9431

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