Re: Low cost membrane keypad prototypes?

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#1042

From: linnix
Date: Wed, 22 Apr 2009 17:29

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On Apr 22, 1:51 am, Mark Harriss <bi...@blartco.co.uk> wrote:
> a...@woodtech.net.au wrote:
> > On Apr 22, 5:20 pm, "David L. Jones" <altz...@gmail.com> wrote:
> >> 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?
>
> >> Thanks
> >> Dave.
>
> > Hi Dave,
>
> > Have you tried Permark? They are usually very competitive on pricing.
>
> > Andy
>
>    Would it be possible to sandwich some 0.6mm FR4 with holes punched in
> it over the PCB board contacts and then another layer of 0.6mm FR4 or
> mylar with thin carbon rubber dots glued to it. Then it would be a
> matter of getting the top layer screen printed with the characters of
> the buttons or the copper layer etched and plated with the numerals.

Why would this be better than a plastic top cover with conductive
pads?  PCB toolings would not be much cheaper than printed plastic
covers.

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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 10:29:52 -0700 (PDT)
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