Last month I wrote about Adafuit's Drawdio kit, an electronic pencil that lets you make music while you draw.
Later, I got an email from JJJ Silver, who invented the Drawdio, and I asked him to tell me how he came up with it. Here's what he said:
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 MacGyver 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.