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	Percussion Chess Progress Report March 6, 2003

Bye, bye Hall Effect Sensors. I couldn't get them to work and didn't think it was worth the effort trying. Instead, I cast about for more direct magnetic switches, flirting for a while with All Electronics' reed switches until Greg Shakar suggested I talk to Shaul Olmert, who'd done a similar project last year. Shaul luckily had about 100 used magnetic switches lying around, and offered to barter them to me for a DVD copy of The Shop Around the Corner. They work: thanks Shaul! Clyde Haberman's column in the New York Times on March 4, 2003! (Nothing to do with my chess set, and not much to do with violins, either) Today's goal was to attach the sensors underneath the board and test that the magnetism could be detected by attaching wires directly into the circuit board. Sensors embedded in foam underneath the board The circuit board All went well; the circuit worked, I was able to play a row of notes, although the whole setup was a bit unwieldy.