At ladyada’s tea party, user mtbf0 has posted details of his RGB brain machine powered by a Boarduino.
…it generates a base frequency at 200Hz. Offset frequencies of 201Hz-217Hz in 1Hz increments can be selected giving binaural beats in the range of 1Hz-17Hz. The LEDs are controlled by comparing the phases of the base and offset waveforms, so although the code’s a little hairier than Mitch’s, adding new frequencies is easy.
Trippy RGB brain machinuino
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.
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