Re: Cool-looking keypads

[ian.bird@xxxxxxx]

Sorry for the slow reply. This tends to be a weekday list for me - anyway

I have a mail at home with some advice from a fellow list member but at
the moment have not had time to play. If you like I can forward it onto
you - send a mail to ian@mollyologydotcom.

One of the chips has adjacent key suppression so you don't trigger more
than one key at once but this would not work well with lines of keys. You
can tune the sensitivity though by altering the capacitor values so may be
able to get around this without problems.

Let us know how you get on if you do use them as I have heard good things
>from

Ian






"mark" <mark.2003@xxxxxxx>
12/12/2003 23:15
Please respond to ukha_d


To:     <ukha_d@xxxxxxx>
cc:
Subject:        Re: [ukha_d] Cool-looking keypads


Thanks Ian,
Very interesting kit.

I like the idea of having a glass panel as that could look very good as a
wall mounted keypad.   I would need to hook the IC's output to a relay to
provide volt-free contacts back to the AV-Switcher and CD Jukebox, but
that
is easy enough.

What are your thoughts on electrode construction behind the panel, say if
you had two rows of eight "keys"?

Cheers,

Mark

----- Original Message -----
From: <ian.bird@xxxxxxx>

> If you're even a little into electronics then I would look at the
qprox
> kit - http://www.qprox.com/.
These are the touch sensitive IC's which are
> easy to use if you follow the ground rules. They are not hugely quick
> though so scrolling through a menu for example would be slower than a
> mechanical button. I have the demo board for one, the E160
> (http://www.qprox.com/products/e160.php)
which is lovely. Very easy to get
> a classy finish with smoked glass etc. One day I will even have a play
> with the chips I have.
>
> Good luck
>
> Ian
>





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