PB701 Electric Intonarumori

That noise board is based on a design made by Urs Gaudenz from Schweizer Gesellschaft Für Mechatronische Kunst - thanks for that!
I added the voltage controll and some extra funcions, like the noise on/off the boost and the mute function.

The Electric Intonarumori has an audio an an control voltage input, while building the board one has to choose between bus 1 and bus 2 for the audio input and the other bus for the control input.

The board is named after the intsrument “Intonarumori” of the Italian Futurist, painter, composer and the author of the manifesto The Art of Noises, Luigi Russolo.


Schematic


Thanks to Taymur Streng for the reverse engineering of the circuit, I never made any schematics of it.


Paper PCB

Parts

  • Resistors:
  • 1x 330 Ohm
  • 1x 220 Ohm
  • 1x 1 kOhm
  • 5x 2 kOhm
  • 1x 4,7 kOhm
  • 1x 5,6 kOhm
  • 1x 20 kOhm
  • Capacitors:
  • 1x 1 nF (foil)
  • 1x 4.7 nF (foil)
  • 1x 39 nF (Foil)
  • 5x 100 nF (foil)
  • Electrolytic Capacitors:
  • 1x 4,7 µF
  • 1x 10 µF
  • 1x 47 µF
  • Semiconductors:
  • digital delay PT 2399
  • optocoupler TLP521
  • 1x LED
  • Mechanical:
  • 1x IC socket, 16 pin
  • 1x IC socket, 4 pin
  • 1x pin strip 1×9
  • 2x pin header, female 90° 1×3, 1×2
  • 2x pin header, male 90° 1×3, 1×2
  • 3x mini switch
  • 3x push button
  • 3x jumpers
  • Potentiometers:
  • 2x 10k
  • 1x 100k