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USB Disco Dance Floor

pi42 writes "Some MIT students built this USB controlled disco dance floor for their dorm lounge. It was built in a week, has 1536 LEDs, 20,000 hand-soldered connections, and is capable of displaying 12-bit color. Check out videos and photos." You can even send the floor an email, though it might not write back.

66 of 357 comments (clear)

  1. TAKE THAT CALTECH by Electroly · · Score: 5, Funny

    So while Caltech is traveling across the country to put up balloons, MIT students are building a kickass USB-controlled disco floor? I think we all know which school knows where it's at.

    1. Re:TAKE THAT CALTECH by Anonymous Coward · · Score: 5, Funny

      Caltech enacts a series of amusing, though not all that great, pranks.

      MIT responds by building a dance floor for a fad which hasn't been popular in 25 years.

      Oh yeah. Geek fight!

    2. Re:TAKE THAT CALTECH by mr_tommy · · Score: 3, Funny

      HA! And they were so smug with those balloons....

    3. Re:TAKE THAT CALTECH by aichpvee · · Score: 2, Funny

      It's time for some serious school to do what should have been done with this project in the first place: build it into a Dance Dance Revolution stage!

      --
      The Farewell Tour II
    4. Re:TAKE THAT CALTECH by Hinhule · · Score: 5, Funny

      Geeks - dancefloor

      Hmmm...

      Geeks - Internet

      More probable...

      Geeks - Internet - webcams

      Uh oh...

      Geeks - Dancefloor - webcams

      I think we have found the reason they made this, they added webcams and light to the floor. Getting a limitless supply of upskirt shots. ;P

    5. Re:TAKE THAT CALTECH by SomeoneGotMyNick · · Score: 3, Funny

      MIT responds by building a dance floor for a fad which hasn't been popular in 25 years.

      At least they aren't wearing Jordache jeans (or Toughskins for that matter).

      I wonder how that floor would hold up to roller skates. I suppose we'll never know considering the people involved. Geeks always had the chance to leave the rink before the rest of the crowd because of the final Couple's Skate.

  2. Disco Stu by derphilipp · · Score: 2, Funny

    Disco Stu likes to go down with the boogie! Reminds me of Leisure Suit Larry 1....

    --
    Spelling mistakes: My is english spoken not tongue of mother.
  3. And they STILL can't dance by joelethan · · Score: 4, Funny
    We geeks should give up now.

    The girls always go for John Travolta, not Poindexter

    /joelethan
    Do a little dance, make a little love - get down tonight!

    1. Re:And they STILL can't dance by Anonymous Coward · · Score: 4, Funny

      Actually, what they don't say is the Disco floor will light rhythmically to DDR steps, allowing even the REALLY geeky to appear as though they have a mild amount of dancing talent!

    2. Re:And they STILL can't dance by Adrilla · · Score: 5, Funny

      If you think DDR is dancing, maybe you should stay off all dance floors completely.

      --

      "Plans are for fools! Oglethorpe, the plutonian (Aqua Teen Hunger Force)
    3. Re:And they STILL can't dance by Pointdexter · · Score: 2, Funny
      The girls always go for John Travolta, not Poindexter
      ;-(
      --
      Party Time: Excellent
    4. Re:And they STILL can't dance by adamfranco · · Score: 2, Interesting

      Actually, DDR experience came quite handy when later on I started learning things like swing dancing.

      Speaking of swing dancing and DDR, Manu Smith has apparently reprogrammed his DDR to do Lindy/Charleston/etc steps. I've not seen it personally as my legs have always been too dead, but he brought it to Swing Out New Hampshire the past few years.

      --
      "When ideology and theology couple, their offspring are not always bad but they are always blind." -- Bill Moyers
  4. wow by TheKidWho · · Score: 2, Insightful

    that is really awesome, they should sell some of those things :-D I would love one of those in my house with some touch sensors too so the floor can light up when I walk on it!

    1. Re:wow by martingunnarsson · · Score: 3, Informative

      They have a simple touch sensor under every tile, RTFA.

      --
      Martin
  5. Disco is dead by thedogcow · · Score: 5, Funny

    Screw that disco crap. I can see a better use for it.

    A Giant Tetris Board. Think of it. You've got the grid-like squares that Tetris has.

    --
    Yes! I listen to NYC Speedcore and do math at 3AM. I suggest you try it too.
    1. Re:Disco is dead by Anonymous Coward · · Score: 5, Funny

      How about (very low-resolution) DivX movies on the floor?

      That way we nerds can brag about having sex on the floor every night... :)

    2. Re:Disco is dead by zwei2stein · · Score: 2, Funny

      Hey, combine it with DDR and you have one hell of an excercise on Level 10

      --
      -- Technology for the sake of technology is as pathetic as eschewing technology because it's technology.
    3. Re:Disco is dead by Mhtsos · · Score: 2, Interesting

      There's been a bigger one though so it's not as cool.

  6. MIT parties are interesting by Dancin_Santa · · Score: 5, Funny

    I had the opportunity to go to several parties in Boston a few years back. A couple at Harvard and a couple at MIT and a couple near BU. Needless to say, the quality of the parties was inversely proportional to the U.S. News and World Report rankings of these schools. Not to take anything away from the homely girls and stereotypical MIT men, but MIT parties were only slightly better than the Harvard parties in terms of fun. However, Harvard edged out MIT in terms of attractive women (much to Mrs. Claus' chagrin).

    Boston U had the best combination of attractive women and fun parties, though the "talent" pool in Boston left much to be desired.

    What would be nice is to have this floor shipped over to Caltech or CMU where the attractive and successful Californians can take full advantage of it. The MIT geeks can still control the floor remotely from their dorms in Boston.

    1. Re:MIT parties are interesting by wan-fu · · Score: 4, Interesting

      CMU is in Pittsburgh unless you mean their west coast extension, in which case, there are just a bunch of unattractive Ph.D. students hanging out there. Caltech has even fewer women than MIT and they are also less attractive (yes, this sounds impossible, but it's true). In summary, while many Californians are attractive, they are not at Caltech or CMU.

    2. Re:MIT parties are interesting by Somnus · · Score: 4, Interesting

      MIT has really gone down hill on this front since the late 80s (link). I caught the tail end before that Krueger kid drank himself to death in '98. Since then, the administration has leveraged the event to change the student landscape: more "well-rounded" admittees, tighter alcohol controls, and less housing choice -- a more Ivy League-like model. I think it's a shame ... you can fix the problems (e.g., real-world competence) without making MIT less distinctive and fun. As a prelude to my graduate education, MIT was perfect.

      As for the women, those at MIT were fit, sharp, non-skanky, and often quite beautiful -- no other campus I've visited/attended matches up. (De gustibus non disputandum, etc.)

    3. Re:MIT parties are interesting by 123abc987 · · Score: 2, Funny

      Well, of COURSE Ph.D. women are ugly. Only women who can't get an MRS degree go for Ph.D's. Goodness knows there's no point in actually educating pretty women, they're just around for impregnating.

    4. Re:MIT parties are interesting by hey! · · Score: 2, Interesting

      When I was at MIT at the start of the 80s, somebody did a study that showed that the whole "well-rounded" thing had been going in cycles for decades. Admissions would look around and realize the student body was dull as hell, and say "Oh my God, we need to admit more well rounded students." Soon academic failure rates would start to climb as the creative, well rounded types were distracted from the academic grind by creative and well rounded activities. Then they'd say, "Oh my God, we need to admit more academically focused student." Repeat basically forever.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
  7. Wow! Just imagine.. by Anonymous Coward · · Score: 5, Funny

    Just imagine a Beowulf cluster of these things!

  8. *ponder* by Duncan3 · · Score: 3, Funny

    MIT... dancefloor...

    There is a joke in there somewhere, I just know it.

    --
    - Adam L. Beberg - The Cosm Project - http://www.mithral.com/
    1. Re:*ponder* by jay-be-em · · Score: 3, Insightful

      So your friend putting up a bunch of xmas light strings in shapes with different timers is more impressive than a usb controlled _programmable_ disco floor with 20k hand soldered connections?

      No. It isn't.

      --
      "Orthodoxy means not thinking--not needing to think. Orthodoxy is unconsciousness." --Eric Blair
  9. If only by dark+grep · · Score: 4, Funny

    If only I had thought of that 20 years ago when disco was 'in' and I was a uni (college if you live in the US). There may have been some chance of spending nights with a real girl in stead of a cold, cold terminal. On the other hand. Probably not.

  10. Looks great but... by obsol33t · · Score: 2, Funny

    I think that those MIT kids need some dance lessons.

  11. Wow with all that hand crafted soldering by Timesprout · · Score: 4, Funny

    I bet they are having to beat hot babes off the dance floor now to make sure all the hotties get a fair chance to show their goodies.

    --
    Do not try to read the dupe, thats impossible. Instead, only try to realize the truth
    What truth?
    There is no dupe
  12. DDR by Ailure · · Score: 4, Insightful

    Anyone else starting to think on DDR with a big dancefloor instead of a tiny dancemat? With all thoose touch sensors...

  13. There's only one style of dance for geeks... by datafr0g · · Score: 3, Funny

    The Robot! old skool geeks, word to ya mammas

    --
    "Who says nothing is impossible? Some people do it every day!" - Alfred E. Neuman
  14. Comment removed by account_deleted · · Score: 2, Funny

    Comment removed based on user account deletion

  15. Tetris (and other ideas) by FleaPlus · · Score: 4, Insightful

    Any bets on how long until a Tetris clone is implemented for this?

    Apparently the panels also have pressure sensors on them -- that's so cool. It sounds they have the hardware they need for an awesome game of massively-multiplayer Twister or Mosh Mosh Revolution. Variants of pinball, pong, or arkanoid could also be fun, with virtual paddles drawn wherever there were two nearby pressure points (i.e. feet).

    1. Re:Tetris (and other ideas) by LiquidCoooled · · Score: 2, Funny

      Play twister, but have the colored points move around to your advantage.

      No more stretching and trying to make yourself uncomfy. Just make sure you always have a nearby color.

      But hey lookee here, the gals have to have one foot here, and stretch the other wayyyyyyyyyyyyyy over there.

      Mit students are too cool for skool.

      --
      liqbase :: faster than paper
  16. hmmm... by Anubis350 · · Score: 4, Funny

    I see this, sitting in my dorm room at 4:30AM and I say to myself, wow, if I were more productive I'd be building something like this instead of reading slashdot. Then I realize that I'm lazy and stop this line of inquiry before it makes me want to actually get up and do something, maybe next week......

    --
    "goodbye and hello, as always" ~Prince Corwin, from Zelazny's Amber series
  17. Vertigo? by op12 · · Score: 3, Funny

    How long do you think you could stare at the floor before falling over/vomiting/having a seizure? I'm going with 15 minutes.

    1. Re:Vertigo? by syzler · · Score: 5, Funny

      Dude, was something in the punch, because I think the floor is spinning and changing colors.

  18. nice work boys, but... by mezzman · · Score: 4, Informative

    ...someone else beat you to it:
    http://www.lightspace.biz/

    1. Re:nice work boys, but... by Anonymous Coward · · Score: 3, Insightful

      except theirs cost about 30 grand for this size. This cost $2500.

    2. Re:nice work boys, but... by Anonymous Coward · · Score: 2, Informative

      "The Lightspace(TM) patent pending technology"...

      Whoops. :P

  19. Re:low-res... by PeDRoRist · · Score: 3, Informative

    It says 30 FPS (and 4096 colors) on the front page.

    --

    Anything you do can get you slashdotted, including nothing.
  20. Wow.. by teamhasnoi · · Score: 5, Funny
    Seeing cool stuff like that makes me wish I was smart.

    Well, back to studying for my Caltech entrance exams.

    Anyone here know how to blow up a baboon?

  21. Re:well? by Anonymous Coward · · Score: 2, Funny

    Dave: Almighty Disco Floor, mayhaps you can give us the laying?
    Disco Floor: Sorry Dave, I can't do that.

  22. It's cool, and sturdy! by AndyChrist · · Score: 5, Funny

    Seriously, I saw one girl in there who was apparantly there to test the floor's durability.

  23. Getting laid at MIT by plimsoll · · Score: 5, Funny

    The odds are good, but the goods are odd.

    --
    Snickersnee3: Build your own 3-watt Luxeon Star headlamp from scratch
    1. Re:Getting laid at MIT by FleaPlus · · Score: 3, Funny

      When I was at CMU, that's what the CS girls often said about the CS guys. Another saying goes: "Women at MIT/Caltech/CMU are like parking spaces. They're all either taken or handicapped."

      I actually disagree with the saying myself, but it's certainly amusing.

    2. Re:Getting laid at MIT by wsloand · · Score: 2, Funny

      At Georgia Tech, while the girls said that about the guys, I would say about the girls: "Good from afar, but far from good."

  24. If only by octal666 · · Score: 2, Insightful

    they had chicks to dance with...

    --
    DON'T PANIC
  25. Re:Brilliant Work....but. by thebudgie · · Score: 2, Funny

    What? There was nothing slim about them!

  26. Another one in process by mecanicaz · · Score: 3, Interesting

    We thought here of making something similar that even mimics the "Dance Dance Revolution" machine that you find in video arcades, haven't figured out how to sense the pressure though, any ideas?

    1. Re:Another one in process by Anonymous Coward · · Score: 3, Informative

      The sensors on this floor are bare wirecoils seperated with a few layers of plastic wrap. The resistance of the wrap drops dramatically under heavy pressure, but this was found out by simply experimenting with handy materials. See if you can find something better and more reliable (though you probably won't find anything cheaper!)

    2. Re:Another one in process by dubbreak · · Score: 2, Informative

      Depends if you want to detect pressure or just a depression (that the foot is down).. for ddr all you need to know is that a square is depressed in which case you can just have two contacts that are seperated then contact, therefore completing a circuit (most homemade ddr pads use weather stripping to hold the contacts appart).

      This summer I'm making my own dance pad, A little googling on the subject will give you lots of good hits on people who have already done this.

      If you want to detect ressure use FSR's, piezo's could also be used to detect velocity of strikes (the harder the strike the brighter the lights would be a neat effect).

      Anyhow, just a few ideas for you.

      --
      "If you are going through hell, keep going." - Winston Churchill
  27. Re:Neo? by Adrilla · · Score: 5, Insightful

    They go for Neo though, didn't they? Almost every girl I know like "The Matrix" movie because of him.

    They go for 'Movie Star, Keanu Reeves', not, 'Hacker, Neo'.

    --

    "Plans are for fools! Oglethorpe, the plutonian (Aqua Teen Hunger Force)
  28. They're engineers all right by MotorMachineMercenar · · Score: 5, Funny

    As you can see on the video, the floor surface was thoroughly stress-tested by a 300-pound hippopotamus on high heels doing the macarena.

    --
    "We have an A-Bomb...what more do you want, mermaids?" --I.I. Rabi, speaking in defense of Robert Oppenheimer
  29. 800x600 version by Edward+Teach · · Score: 2, Funny

    I want one but man, soldering 1,444,000 led's would be a bit tiring.

    --

    Setting his threshold to 5, Sparky eliminated most of the trolls on /.

  30. In other news... by dark-br · · Score: 5, Funny

    ... MIT's giant usb controlled disco dance floor hacked now scrolling "C A L T E C H"

  31. Re:Laser? by FleaPlus · · Score: 2, Informative

    How so? Lasers generally don't go through bodies very well. Maybe if you had a laser shining from below and had a translucent dance floor, but that actually seems more difficult than just using LEDs.

    Actually, I suppose maybe the lasers could go through bodies, but then you'd have other problems to deal with.

  32. What's the return policy for dead pixels... by sxsnyc · · Score: 3, Funny

    and...who's writing the firmware update and driver so I can hook up my PSP to this thing?

  33. Bah ... by hotspotbloc · · Score: 4, Funny

    Bexley had the same thing 20 years ago and that one was controlled with your mind! Man, I miss their parties. Sorry, what were we talking about?

    --
    "I hate to advocate drugs, alcohol, violence or insanity but they've always worked for me" - HST
  34. ping dancefloor by hughk · · Score: 5, Funny
    % ping dancefloor.mit.edu

    Pinging 172.74.99.17 with 32 bytes of data
    Reply from 172.74.99.17 bytes=32 time=100ms

    Node 172.19.15.17 is staying alive!
    Apologies!
    --
    See my journal, I write things there
  35. Bus powered? by godal · · Score: 4, Funny

    does it draw power from the usb bus or does it require an external power supply?

  36. Re:Music in the video by Ice+Tiger · · Score: 2, Funny

    I thought I was watching an Amiga demo.

    --
    "Because we are not employing at entry level, offshoring will kill our industry stone dead."
  37. Some clarifications and notes by asoko · · Score: 5, Informative
    I can't claim that I was a major player, but I did help with the driver and some visualizations for this thing. Just to clarify:
    • The emails you send do not get displayed on the floor, in case you were wondering. Ddf is just the email list.
    • The people dancing in the video are not at a party, but members of a theater group that were recuited after their performance to shoot the video. At parties it's much groovier.
    • The tiles on the floor can be controlled in real time, and by either a standalone program or an XMMS plugin (a spectrum analyzer is working as of recently) And yes, it should be relatively trivial to program tetris for it, though it hasn't been done yet.
    • Our inspirational song is "Work it" by Daft Punk.
    Aaron S.
    1. Re:Some clarifications and notes by asoko · · Score: 2, Interesting

      We wrote our own custom plugin. It has the ability to dynamically control the frame rate. There's also a pre-generated animation format (though I didn't work on that). People have been using Matlab to generate patterns, then we load them and display them on the floor (for example, the expanding wave and spotlight patterns)

      Yes, superbright LEDs (got a great bulk rate deal). I didn't work with the hardware, so I don't know about the part numbers. Give us some time, we should be adding some more info to the website. Or email the list.

  38. What are you going to do today, Napoleon? by Jakeypants · · Score: 5, Funny
  39. Okay. That was cool. Up until... by blair1q · · Score: 3, Funny

    ...I actually saw the pictures... ...and then the movies... ...and then the movies of MIT students "dancing" on it... ...and then what an MIT soldering-iron jockey's idea of film editing meant... ...I'd say "they must've sniffed too many flux fumes," but no, that's not going to be what caused this...