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Re: Flexible Numeric Keypad

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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