This quite interesting project was found via electro-music.com forum post.
It is simple tap looper, based on 4031 cmos chip.
Read more about it on Tiny Dazzler blog.
Great project! :)
made a 16 by 16 grid with touch osc that sends osc messages to pure data that turns the grid into 4 8 bit binary numbers, 2 horizontal, 2 vertical and then uses the 8 bit (0-255) numbers to control the parameters of a simple sine wave synth with amplitude and frequency modulation and also some cross modulation.Check also other stuff from Noizehack, there is lot of different type PD sequencers.
"Several bus-size biomorphic balloons, each with its horn tuned to a different in the octave, make up a walk-in self-playing organ. A 200 foot-long scroll of dots and dashes encodes a musical score of old hymns, pop classics, and improvisational ditties. This score is deciphered by the organ's brain - a bank of light sensitive switches - and then reinterpreted by a series of switches and relays that translate the original patterns into non-repeating variations of the score."