We (the City University Experimental Ensemble) did a great Dirty Electronics workshop and concert at City with John Richards. I now call a great small op-amp instrument (Bed of Nails) my own, and will probably be hacking it a bit in the near future! Also it was inspiring to hear and meet and Yuri Suzuki and Graham Dunning.
Here is a recording of the concert:
About the piece
Afterwards I was curious to see how the sounds of the “Bed of Nails” could be altered or extended using programmable resistors. This led to a version that allows for more broadband noise in addition to the classic synth-like sounds of the bed – see below :)
And here is how the Arduino-attached device sounds…