pressure sensor dresses: embroidered speakers

Very excited – the embroidered speakers on the shoulders of the first dress are done and we’re really happy with how they turned out.  Here’s a sneak preview:

Embedded underneath those two crochet circles are two tiny speakers.  We wanted to embroider the actual speakers themselves, à la How To Get What You Want, but the sound just wasn’t strong enough.  We even bought some rare earth magnets, which were so strong they flew around the room and stuck to things while we were testing them!  We’re pretty sure the problem was the surface we used to embroider onto: cotton fabric.  It was probably absorbing the sound waves, rather than vibrating and causing resonance.  Oh well, a nice experiment…

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