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Article #1039

Re: Low cost membrane keypad prototypes?

#1039
From: David L. Jones
Date: Wed, 22 Apr 2009 10:51
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"Robert Lacoste" <see-alciom-dot-com> wrote in message 
news:49eee6d6$0$12649$ba4acef3@news.orange.fr...
> "David L. Jones" <altzone@gmail.com> a οΏ½crit dans le message de news: 
> 9zzHl.35008$FR3.10790@newsfe04.iad...
>> I'm after a place that can do low-ish cost membrane keypad prototypes and 
>> small qty (100's).
>> Not actually membrane with the flex cable, but the simpler polydome (or 
>> tact) variety that sticks directly onto the PCB.
>> I've been quoted $600+ for tooling locally, just wondering if there is 
>> someplace cheaper?
>
> 600$ seems already a good pricing. Alternatively capacitive sensing can be 
> a zero-tooling solution, as it could allow to design your keyboard as a 
> simple PCB and overlay it with any kind of decorative layer 
> (laser-printed, etc). See solutions from Cypress (capsense), Microchip and 
> others.

Thanks.
Yes, I was already considering the Atmel Qtouch, but the keys are densely 
packed (6mm spacing) so although it might work, I suspect there might be 
quite some development to perfect it, and then there is the possibility of 
some people having issues with it.
Anyone have any experience with touch technology at that spacing?

Thanks
Dave. 
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From: "David L. Jones" <altzone@gmail.com>
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Date: Wed, 22 Apr 2009 20:51:39 +1000