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Re: Flexible Numeric Keypad

the problem is moisture.. I'm thinking a few of those "do not eat" silly-con
gel packs inside the case might be helpful..

> Michael Paine wrote:
>
> >Actually, waterproofing wearable computers is probably the hardest thing
to
> >do, yet the most important.. I would hate to have a $3k system out in the
> >woods, collecting data, while it starts to rain..
> >
> Actually I'm trying to do that with the system I'm building.
> I wan tto use 2 pre-made (and maybe slightly modified) aluminium-cases for
> self-build electronics and seal them up with rubber before tightening
> the screws.
> One box for the batteries (later separated into charger+dc-regulator and
> 2 battery-boxes)
> and one (maybe thinned) for the SBC+display-controller+hdd,... . I'm
> just not shure
> about the display but I think I'll take it apart some time after ISWC,
> make the lens
> adjustable (by using motherboard-spacers that can be turned to adjust
> all 4 edges of
> lens and display), replace the mirror with a half-silvered one and once
> everything is
> perfect build a case of plastic. This friendly-plastic looks good for
> that job, even though
> I'd probably need to have it shipped.
>
> >
> >
> >
> >>I didn't intend to imply that you would stick your electronics in water.
> >>
> >You
> >
> >>would mold the plastic, then _take out the electronics_, and dip the
> >>
> >plastic
> >
> >>in water. You could then sandwich the internals between two (or more if
> >>necessary) plastic layers and attach the two with adhesive or screws.
> >>However, this may be too difficult for you, so you may wish to stick
with
> >>the latex.
> >>-Mel
> >>
> >>-----Original Message-----
> >>From: John Tregidga [mailto:]
> >>Sent: Tuesday, October 02, 2001 9:10 PM
> >>To: 
> >>Subject: RE: Flexible Numeric Keypad
> >>
> >>
> >>I don't think so Mel,  "...dip in cold water to set.."  does not sound
> >>
> >like
> >
> >>a great idea for electronics.
> >>Nice try though. :-)
> >>
> >>Cheers
> >>-=JT=-
> >>At 04:54 PM 10/2/2001 -0400, you wrote:
> >>
> >>>What about trying "Friendly Plastic"?
> >>>See http://www.jewelbay.com/EJS/friendlyplasticsindex.htm
> >>>You can get it at a craft store. It's moldable, easy to use plastic.
> >>>Good Luck!
> >>>Mel
> >>>-----Original Message-----
> >>>From: John Tregidga [mailto:]
> >>>Sent: Tuesday, October 02, 2001 11:34 AM
> >>>To: Melanie McGee
> >>>Subject: RE: Flexible Numeric Keypad
> >>>
> >>>
> >>>Hi Mel,
> >>>
> >>>Yes, you are right, but the thin plastic sheet with the contacts is
> >>>
> >bonded
> >
> >>>between a hard protective outer layer and
> >>>a thin metal back plate. I could use it like this, but need to
> >>>
> >"repackage"
> >
> >>>the keys and the press technology. That
> >>>is the challenge.
> >>>
> >>>Cheers
> >>>-=JT=-
> >>>At 11:02 PM 10/1/2001 -0400, you wrote:
> >>>
> >>>>Hi John,
> >>>>If you open up the Adesso, you are likely to find a thin plastic sheet
> >>>>
> >>(I'm
> >>
> >>>>not 100% sure on this, but it's worth a look). The sheet is what the
> >>>>
> >keys
> >
> >>>>hit as you press on them - it is an unpackaged keyboard. What I would
> >>>>
> >try
> >
> >>>>would be to repackage that sheet so that it suits your needs. I should
> >>>>
> >>warn
> >>
> >>>>you though that although repackaging isn't necessarily technical, it
> >>>>
> >can
> >
> >>be
> >>
> >>>>quite a task.
> >>>>-Mel
> >>>>-----Original Message-----
> >>>>From: John Tregidga [mailto:]
> >>>>Sent: Monday, October 01, 2001 11:00 PM
> >>>>To: 
> >>>>Subject: Flexible Numeric Keypad
> >>>>
> >>>>
> >>>>Hi All,
> >>>>
> >>>>I'm not tech savy enough to create it, but I know the project is
pretty
> >>>>simple. Here is what I want to create
> >>>>1.) Flexible and thin (membrane) numeric keypad. Small
> >>>>
> >>>>2.) connects to my libretto through either the PCMCIA /USB converter
or
> >>>>port rep serial or PS/2 jack
> >>>>
> >>>>I've got a nice ultra thin Adesso 17 key keypad, but the buttons stick
> >>>>
> >up
> >
> >>>>to high (and its low profile) and
> >>>>its keyclicks are louder than I'd like.
> >>>>
> >>>>What would be ideal is a small cell phone or calculator keypad. Soft
> >>>>
> >>rubber
> >>
> >>>>keys and basically silent.
> >>>>Once removed from the housing it would be somewhat flexible and low
> >>>>
> >>>profile.
> >>>
> >>>>Does anybody out there have any ideas or help on this project??
> >>>>
> >>>>What would also work for me would be a cut down version of those
> >>>>"flexible/waterproof" keyboards.
> >>>>
> >>>>Cheers
> >>>>-=JT=-
> >>>>
> >>>-----Original Message-----
> >>>From: John Tregidga [mailto:]
> >>>Sent: Tuesday, October 02, 2001 4:56 PM
> >>>To: 
> >>>Subject: RE: Flexible Numeric Keypad
> >>>
> >>>
> >>>Nice idea Andrew.  I suppose I can find that at a craft shop of some
> >>>
> >kind.
> >
> >>>That might just work! ;-)
> >>>Thanks
> >>>At 04:29 PM 10/2/2001 -0400, you wrote:
> >>>
> >>>>[deletia]
> >>>>
> >>>>>Here's my new question:  How can I cover this whole assembly?  I was
> >>>>>thinking of that plastic contact film used for sealing photo's but
> >>>>>
> >>that
> >>
> >>>>>won't work well over the rubber keys.  Any ideas??
> >>>>>
> >>>>[rest deletia]
> >>>>
> >>>>Hi John,
> >>>>
> >>>>How about liquid latex?  You can paint it on in layers as required and
> >>>>
> >in
> >
> >>>>the colours you want, and it's definitely water-proof.
> >>>>
> >>>>Andrew.
> >>>>
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> >>>
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> >>
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