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I didn’t finish what I was working on, but the sandpaper made a nice squeaky sound.

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Icicles. Smashed.

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Muscle wire contracts when it gets hot, and it gets hot when you put electricity through it, so the more volts, the higher the pitch.

With bonus Tom Fox-style whirly strummer!

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Who knew you could get more than one note out of a soda can tab?

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Yesterday’s silent windchimes, hooked up to a computer via usb midi. The chimes are made of conductive fabric, suspended by conductive thread from a microcontroller which sends midi notes whenever two chimes touch.

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Silent fabric windchimes won’t bother the neighbors.

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A DC motor makes the string whirl around. A second DC motor acts as a hub, and is connected directly to an amplifier.

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No more mic and amp – the Stroh clamp is all acoustic! Still sounds like screaming goats, though.

The acoustic amplifier is made from a round mint tin, an old bike horn, and a laser-cut bridge borrowed from the 8-bit violin.

The electric clamp was Day 19.