instrument-a-day 23: membrane pipe


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I think the membrane pipe is a relatively recent invention. I’m not sure who came up with it, but there’s a lot of nice examples on youtube. Here’s a how-to video. I should have watched that video before making this thing, which is my first attempt at a membrane pipe.

I didn’t make any effort to tune it – I just drilled holes approximately where my fingers could reach, and that not very accurately. You can see my hands straining in the video.

instrument-a-day 21: circuit starving


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My favorite form of circuit bending, because it’s the easiest, is what I call circuit starving: stick a potentiometer into the battery connection so you can turn down the voltage until the circuit has just barely enough power to work. That’s where interesting stuff starts to happen.

You don’t need to open the toy’s case, solder, or cut anything for circuit starving. Make a sandwich with a piece of paper between two scraps of aluminum foil attached to the leads of the potentiometer. Insert it between one of the batteries and its spring contact, and the potentiometer becomes part of the power circuit. Then you can tweak the pot, in very tiny increments, until the weirdness happens.


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I designed the 8-bit violin during last year’s instrument-a-day. I ended up donating violin 0x01 to Flux Factory’s fundraising auction. I made this one, pretty much identical to the first, for and with the help of violinist Patti Kilroy, who tried it out for this video. This is the first time she’s played the finished violin!