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General Chat Thread, LackRack: Ikea server racks for living room datacenters in General; Originally Posted by maniac I'd actually be very much up for doing some proof of concepts on some of this ...
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    dhicks's Avatar
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    Quote Originally Posted by maniac View Post
    I'd actually be very much up for doing some proof of concepts on some of this stuff, as there's some pretty interesting ideas there, and I think there's enough of the necessary componants in existance to build a working device along the lines of some of your thoughts.
    Hmm - some further thoughts:

    Geek In Disguise : Microsoft Pictionaire ? bringing the digital and physical worlds together

    That looks interesting - an XGA ceiling-mounted projector for the display and a DSLR camera for input. The video clip mentions it was tested by "design professionals", which doesn't bring to mind a typical class of year 8s, but it might work well with some more civilised senior school classes. The shadow cast by a single projector didn't seem to matter, and XGA resolution seemed to work okay for several users. Interestingly, I have a couple of projectors sat in a cupboard that no-one seems to ever use, and we have a DSLR that only works when tethered to a machine...

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    Quote Originally Posted by abullett View Post
    Has nobody linked to this yet?
    Build Your Own Multitouch Surface Computer
    This looks like the best idea yet, plus we can make possibly the biggest table?

    so we would need;

    acrylic,
    IR LED's,
    a sheet of drafting vellum,
    silicon+roller,
    modified PS3 eye,
    floppy disk,
    computer,
    power supply,
    projector,
    heat absorbing and Ir absorbing filters,
    cabinet/table,
    lots of config time,
    even more play time.

    anyone think that this is too much to do?

  3. #63

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    Quote Originally Posted by mjs_mjs View Post
    This looks like the best idea yet, plus we can make possibly the biggest table?

    so we would need;

    acrylic,
    IR LED's,
    a sheet of drafting vellum,
    silicon+roller,
    modified PS3 eye,
    floppy disk,
    computer,
    power supply,
    projector,
    heat absorbing and Ir absorbing filters,
    cabinet/table,
    lots of config time,
    even more play time.

    anyone think that this is too much to do?
    Plus a mirror as the projector will be mounted near the top of the cabinet.

    I prefer the idea of placing the vellum underneath the acrylic sheet, as that way the thing would be resistant to spills etc.

  4. #64

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    I posted a whole thread about the opensource multitouch tables about 7 months ago which may provide some extra resources:
    Open Source Multitouch Surface

  5. #65

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    Quote Originally Posted by mjs_mjs View Post
    This looks like the best idea yet, plus we can make possibly the biggest table?

    so we would need;

    acrylic,
    IR LED's,
    a sheet of drafting vellum,
    silicon+roller,
    modified PS3 eye,
    floppy disk,
    computer,
    power supply,
    projector,
    heat absorbing and Ir absorbing filters,
    cabinet/table,
    lots of config time,
    even more play time.

    anyone think that this is too much to do?
    I've actually ordered pretty much everything I need to make one of these now - I have an old kitchen cabinet I'm going to buther to make a table out of - if it works well I might put it in something better eventually, and I'm going to borrow an old projector from here to test it with - got an old mitsubitshi one in the cupboard that should do the trick.

    Also the webcam doesn't have to be a playstation eye - I mullered a logitech webcam last night and made it IR sensitive - works a treat, although I've not tested it with the relevant software yet.

    Thanks for that thread SYNACK, somehow I overlooked that the first time. It was longer ago that 7 months you posted it thou, that thread is 2008

    Mike.
    Last edited by maniac; 28th January 2010 at 10:46 AM.

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    I've just ordered a batch of 50 IR LEDs off ebay. Instead of a projector, I plan on building mine around an LCD panel.

    I'll be popping into the DT department later to get some ideas on how to go about acquiring the plexiglass required, and maybe some ideas on cabinet design. I'm thinking a sloped surface would work best, as the viewing angle on an LCD would hinder a flat one, especially when you're sitting down.

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    Having skimmed through the thread - how will you get the IR webcam to see the top panel if you've mounted an LCD screen under it?

    RwD

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    Quote Originally Posted by RinSewand View Post
    Having skimmed through the thread - how will you get the IR webcam to see the top panel if you've mounted an LCD screen under it?

    RwD
    They're transparent.

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    Just had a thought: A lot of webcams have noticeable input lag. How much of an issue would this be?

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    Quote Originally Posted by fafster View Post
    Just had a thought: A lot of webcams have noticeable input lag. How much of an issue would this be?
    not sure, but you will find out soon!!

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    Oh god... I've created a monster it seems.....

  12. #72
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    Quote Originally Posted by fafster View Post
    They're transparent.
    Ahh right - I did not know that - learn something new every day!

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    Quote Originally Posted by fafster View Post
    I'm thinking a sloped surface would work best, as the viewing angle on an LCD would hinder a flat one, especially when you're sitting down.
    That implies a single user, though, or maybe two or three. Surely the idea of one of those over-priced touch-tables is that a whole group of people can cluster around the thing, which you can't do if the tables slopes one way?

    Ooh, sudden thought - unless you make it swivel?...

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    Quote Originally Posted by fafster View Post
    Just had a thought: A lot of webcams have noticeable input lag.
    Good point - might be worth spending a bit extra on a webcam to get a decent one. From what I understand, the camera used in the Wiimote is actually remarkably high quality - 1024 X 768 resolution, I think, you could try using one of those.

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    Quote Originally Posted by dhicks View Post
    That implies a single user, though, or maybe two or three. Surely the idea of one of those over-priced touch-tables is that a whole group of people can cluster around the thing, which you can't do if the tables slopes one way?

    Ooh, sudden thought - unless you make it swivel?...

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    David Hicks
    I still don't know which way I'll take it. I'm building it in my head, and I'm torn between flat or sloped. I'm just thinking sitting over a flat table wouldn't do wonders for your lower back, especially as you can't tuck your legs underneath, meaning leaning further.

    Unless the screen is twisted 45 degrees, so that when you use it you can move closer as the corner will be between your legs.

    Quote Originally Posted by dhicks View Post
    Good point - might be worth spending a bit extra on a webcam to get a decent one. From what I understand, the camera used in the Wiimote is actually remarkably high quality - 1024 X 768 resolution, I think, you could try using one of those.

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    How many points can the wiimote handle simultaneously?
    Last edited by fafster; 29th January 2010 at 09:33 AM.

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