[Lab] Touch sensitive/reactive windows

Fri Apr 29 12:03:49 EDT 2011

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On 28 April 2011 10:46, Andrew O'Malley <aomalley at gmail.com> wrote:

> Hi all, an update on this touch-sensitive windows project . . .
>
> I ended up using the CapSense library for Arduino with a row/column
> electrode arrangement, thus only needing 11+1 i/o pins for each 5x6
> array of windows.  Thin wire was used for the electrodes, with a
> row/column intersection centered on the back of each window.  Despite
> some noise/interference problems (mostly solved w/ grounding), this
> solution worked pretty well.
>
> Each window was individually illuminated by a Shiftbrite, and the
> whole thing assembled in a fabricated steel structure.
>
> I've written a detailed post about the (on-going) project here:
> http://technoetc.net/blog/2011/04/27/urbana-2011/
>
> Thanks again for your input and suggestions,
> ao.
>
>
>
> On Mon, Mar 14, 2011 at 11:10 PM, Andrew O'Malley <aomalley at gmail.com>
> wrote:
> > Thanks for the suggestion.
> >
> > The other issue I have with an ir+camera solution is that there will
> > be substructure in the tower which will be holding all the lights
> > which illuminate the windows, so there will only about a 3 inch margin
> > between that and the inner walls.
> >
> > ao.
> >
> >
> > On Mon, Mar 14, 2011 at 7:02 PM, Mike Baker <mbaker3 at gmail.com> wrote:
> >> If you're looking at an IR based solution I've been working on a touch
> table
> >> using IR lasers. They have the advantage of still working quite well in
> >> sunlight rooms.
> >>
> >> Here are the lasers I use and am quite happy with so far:
> >>
> http://aixiz.com/store/product_info.php?cPath=44_27&products_id=67&osCsid=d5b9a3ff99350c797248ca117ed67cfb
> >>
> >> The challenge with your idea would be somehow using a camera to capture
> the
> >> reflected IR in that small box. I can't think of a solution immediately
> but
> >> I'll keep on it. Maybe the use of a chrome ball or extreme fish eye lens
> on
> >> the camera to try and capture all sides of the installation at once.
> >> --
> >> Mike Baker
> >>
> >>
> >> On Mon, Mar 14, 2011 at 5:43 PM, Andrew Plumb <andrew at plumb.org> wrote:
> >>>
> >>> Have a look around for spray-on anti-static ESD coatings.  That might
> get
> >>> you the conductivity you need for capacitive sensing over larger
> surface
> >>> areas.
> >>> Andrew.
> >>>
> >>> On 2011-03-14, at 5:13 PM, Andrew O'Malley wrote:
> >>>
> >>> Ouch, too expensive for my budget considering I have 100+ 5" x 7"
> >>> windows to deal w/.
> >>>
> >>> Thanks for the input everyone, please keep it coming if anything comes
> to
> >>> mind.
> >>>
> >>> So far my most promising results are using capacitive sense wires near
> >>> the windows; going to do a full-scale mock-up of my interaction
> >>> surface this week to confirm.
> >>>
> >>> Cheers,
> >>> ao.
> >>>
> >>>
> >>> On Mon, Mar 14, 2011 at 5:03 PM,  <bentfork at gmail.com> wrote:
> >>>
> >>> I've seen transparent conductive glass used for DIY EL screen
> >>>
> >>> printing.  I think they used Indium Tin Oxide, aka ITO Glass.
> >>>
> >>> The cheapest I could find (in 30 seconds) was
> >>> http://bayviewoptics.com/id2.html
> >>>
> >>> It looks like people have been able to manufacure their own.   I even
> >>>
> >>> saw a youtube on  it. http://www.youtube.com/watch?v=OTu4KhL7IOE
> >>>
> >>> If you find any cheaper let me know ;)
> >>>
> >>> On Mon, Mar 14, 2011 at 3:47 PM,  <lab-request at artengine.ca> wrote:
> >>>
> >>> Message: 8
> >>>
> >>> Date: Mon, 14 Mar 2011 15:47:21 -0400
> >>>
> >>> From: "Andrew O'Malley" <aomalley at gmail.com>
> >>>
> >>> Subject: Re: [Lab] Touch sensitive/reactive windows
> >>>
> >>> To: Jean-Marc LeBlanc <jeanmarc.leblanc at gmail.com>
> >>>
> >>> Hi,
> >>>
> >>> Thanks for your ideas/suggestions everyone -- I'm hearing the idea of
> >>>
> >>> conductive coatings or conductive plastic a lot, anyone have any leads
> >>>
> >>> where I would acquire such things?
> >>>
> >>> Thanks again,
> >>>
> >>> ao.
> >>>
> >>>
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> >>>
> >>> --
> >>>
> >>> Makerbot Number Nine... #9... 0x09... 0o11... 0b1001...
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> >>>
> >>>
> >>>
> >>>
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> >>
> >>
> >
>
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