Drawdio: Turn Almost Anything Into a Theremin
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Uploaded by wakeupsilver on Nov 18, 2008
Imagine you could draw musical instruments on normal paper with any pencil (cheap circuit thumb-tacked on) and then play them with your finger. The Drawdio circuit-craft lets you MacGuyver your everyday objects into musical instruments: paintbrushes, macaroni, trees, grandpa, even the kitchen sink...
One day I bought a "harmonium" kit at the street market in Bangalore. I hacksawed the keyboard off to make the first ever Drawdio circuit. We played with it at a local school in the slums using plants, water, our foreheads, etc. My friend told me graphite would work too. Meditating on it, I realized the Drawdio circuit should be literally attached to a pencil to "draw audio," and that's where the name came from: Draw + Audio.
DIY: Make it. Remix it. Play it.
See http://drawdio.com
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@tingulee No not at all. For example, if the human body is 1 M-Ohm, and if the voltage in the Drawdio circuit is 1.5V DC, then the current is 1.5uA. That is 1.5 "micro" amp or 1.5 out of a million of an amp. It is generally not considered to start to be dangerous until you get to at least 40V or more, and even then the power source must be able to supply a very high current for a significant amount of time.
1 year ago 15
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@didanaid123 do you mean "the itsy bitsy spider" ?
1 year ago 11
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best use ever of lounge sink :)
fablabamy 9 months ago
@fablabamy probably, but we've used that sink for some crazy stuff. long live the sink (and sinks in general)
wakeupsilver 9 months ago
i'm gonna try to make this with an arduino but in a cooler way!
like having buttons drawn on the paper, and each one produces a note saved in arduino memory
PTtub3r 10 months ago
@PTtub3r That's really cool. I've experimented with similar things. I'm excited to hear your results. One recommendation: if you want consistent enough measurements so as to consistently label the buttons don't go through the human with the circuit. Go directly through the graphite with a wire bypassing the human. Also, one more thing, make sure to not bend the paper and use a smooth surface! Good luck!
wakeupsilver 10 months ago