Re: Low cost membrane keypad prototypes?

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#1050

From: linnix
Date: Thu, 23 Apr 2009 00:48

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On Apr 22, 4:41 pm, Mark Harriss <bi...@blartco.co.uk> wrote:
> linnix wrote:
> > Why would this be better than a plastic top cover with conductive
> > pads?  PCB toolings would not be much cheaper than printed plastic
> > covers.
>
>    Dave's talking about a complete custom membrane keypad for very small
> quantities, doing it all as pcbs will save the 600 buck tooling cost.

You can print flat plastic cover at very low cost.  Tooling is
necessary only if you make doomed contact area.  PCB (FR-4) is too
rigid for doomed contacts and can not be printed with color.  FR-4 is
generally more expensive than plastic.  I would use as small as
possible FR-4 between bigger plastic cover and base.

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From: linnix <me@linnix.info-for.us>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Low cost membrane keypad prototypes?
Date: Wed, 22 Apr 2009 17:48:20 -0700 (PDT)
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