Sponge music

[Aaron] calls this project “Stochasticity”. It uses two sponges as a musical interface.  The performer wears a wrist strap and then draws on the table with water from the sponge to play different notes. You really need to watch the video to fully understand what’s going on here.

We’re guessing that this is Arduino based since some of his other projects are as well. You can try out another quick project of his, an Arduino electromagnetic field detector. Check out video of that after the break.

Arduino EMF detector

[Thanks Juan]

Comments

  1. Loadlawl says:

    Pretty noisy but nice.

  2. Erik says:

    The sponges are cool, I like that you can use it visually with the snail trails…

    The EMF detector is as dumb as using a uC to blink an LED (I guess it was only included because audrino was mentioned). Simply complimenting NPN and PNP transistors together achieves the same. I found that out for myself as a kid – about 4 (2 ea) have enough gain to detect your hand waving nearby, and if you have a speaker instead of an LED attached you can hear the noise (usually power frequencies, 60/50hz depending where you are)

  3. Mr Ferrys says:

    this is art. xDD I like it.

  4. BurnData says:

    Anyone else notice that he sounds almost exactly like Adam Savage?

  5. supershwa says:

    You need a MIDI I/O interface you can use to plug it into a computer – voila – a MIDI controller you can use to change the samples, effects, etc.

  6. CRJEEA says:

    I have an old stylephone lying on my desk somwere think I will solder a few transisters across the keys with a common colector to the stylus and link the baces with resistors to make a voltage tester of sorts withthe output ailudible not visual then a simple set of transistors to make an initial amplifyer so I can sence the resistance of the water (may cheat and make the water slightly salty)
    may use a 555 timer when I dig one out insted of stylephone but it’s good to use what’s at hand (:
    Hay presto exactly the same responce but no microprossesor to program wonderful (:

  7. aztraph says:

    ok, first video, not bad, like water for music. i’m thinking musical fountains. second video: duh, no contact voltage sensors have been around for years, I have a http://www.sears.com/shc/s/p_10153_12605_03482448000P?vName=Tools&cName=ElectriciansTools&Lighting&sName=Test%20&%20Measuring%20Tools&psid=FROOGLE01&sid=IDx20070921x00003a cost me $20 at the time. cheapest arduino is 17.50 and that’s a clone, average cost is 30-40, don’t get the cheap aspect. if your working with high voltage though, you sure don’t want any exposed wires to hit a ground

  8. mike says:

    I don’t get how it works. What resistance is changed? How is his body incorporated into the circuit by only a single contact point — isn’t that kind of like sticking one leg of a resistor into a circuit and leaving the other one floating in the air? Or does it use the person like a “hanging resistor” and detect the change in EM noise it picks up? Also, what’s the wrist strap?

  9. Ben Ryves says:

    mike: I assume that one end of the resistor is the wrist strap, the other is the sponge.

  10. DeadlyFoez says:

    You know what would be freaking great, using something on the lines of this like a midi input. You could make the sound so much better. Do the water fountain wall idea and have it lit up with LEDs. That would be absolutely sweet.

  11. mars says:

    Cool.

  12. Dreyfoosarthacker says:

    ZED?!?!? is that you?

  13. Alex says:

    I usually scoff at artists making “interactive art”, pretending to be engineers, and making “alternative midi controllers.” That’s what I expected this to be, and I suppose it is to some degree.. But I enjoyed it. The attempt at music was pushing it a bit, but the first third of the video was pretty cool. I especially like the sponge networking.

  14. amk says:

    I’d turn it into a midi controller and play a nice earthy synth pad instead of that gawd awful square wave. Very cool project.

  15. vonskippy says:

    I anticipate Marching Bands the world over will rush to adopt this new musical instrument.

  16. LF4 says:

    Wonder how he’s going to detect the resistance when he has a loop (water cycling).

  17. junkhacker says:

    @LF4 i’m sure the water will only be a slow trickle, and the break from the end to drip into a trough would be enough. even forgoing that, the resistance is between the point the finger is touching, and the point where the other wire is attached, making the distance between them more important then a full circuit made of high resistance water

  18. kristian says:

    @supershwa:
    the first time i read your comment i thought it said “viola!” because that’s what i was thinking. space the sponges out by fifths instead of octaves and you have half a cello. midi THAT!

    doing the same thing but with the person acting as a floating capacitance would be cooler; i actually built something like that last year (based on the liquid level meter). then you don’t even need the wrist strap… or the water, for that matter :P

  19. jeditalian says:

    pretty sure i could play ‘inagada da vida’ (however u spell that) with that.
    maybe ‘smoke on the water’ as well but i know i heard some notes from inagadadavida in that vid

  20. mikeymike says:

    haha Lincoln Nebraska represent

  21. Balbor says:

    Nice thing to paly with!
    You could change the picth by adding salt at some point of the track.

  22. Paul says:
  23. This is exactly what I was searching for on google, I guess I got my answer! lol

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