Re: Design experience with rubber switches?
- From: Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx>
- Date: Sat, 18 Feb 2006 19:16:53 +0000
Joerg wrote:
Hello Folks,
A while ago I asked about cheap tact switches. I found that none of the
usual ones works well for handheld gear if you don't want to have an
extra cap. Plus they don't come in round to avoid enclosure milling.
After asking the same question in a German forum one of the guys there
(Gunther Mannigel) suggested these:
http://www.ittcannon.com/media/pdf/catalogs/e22.23.pdf
These are arrays of 36 rubber switches that can be cut into individual
switches, or selectively cut to make a semi-custom keyboard array if
desired. The really good news is that they come in round, allowing
simple drilling of an enclosure to accommodate a switch.
At Arrow they list for just under $10/36 which comes to about
25c/switch. Right on BOM budget. Sweet. But: There is scant information
about these, no app notes, no recommended drill patterns, thicknesses,
etc. IOW, nada.
The rep promised me a file with recommended land patterns. My question:
Has anyone designed with stuff like this? Share experiences? Are there
other large manufacturers?
I've had a little experience.
You can make up your own pattern to be honest.
Try googling 'elastomeric switch' and 'membrane switch' for more suppliers.
Graham
.
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