Entropy Expander

multi-faceted random voltage generator expander

The Entropy+Expander packs together some of the most random voltage options in 6hp. It provides a controllable “Glide”(slew) out for the S/T\H, a comparator with a controllable rate(“Thrsh”) of random gates(“Rand Gate”) out with an input to compare other waveforms(Comp In, inserting a cable into here breaks the white noise normalization), and high pass filtered white noise resulting in approximate “Blue noise”(+3db/octave) and “Violet noise”(+6db/octave) outs.

The unique part of the circuit is a voltage controlled A/B switch thats normalled to the “Rand Gate” out that’s switching between the S/T\H out(left Blue led window)and Infra out(right Red led window), the Glide control also effects the S/T\H coming out of the switch so you can get really random results from the “Entropy Out.” Inserting a cable into “Switch CV In” breaks the random gate normalization and lets you toggle between A/B(left S/T\H out and right Infra out, indicated by the led windows) with your own gate or trigger.

diy kit: $40
pcb/panel: $20
there are also bundle deals for buying the entropy and expander together


  • 15 mA +12V
  • 10 mA -12V
  • 0 mA 5V
  • 45 mm deep
  • Ø 3.00 (2 Votes) Average Rating

Available as an assembled Module and as a DIY project.

This Module is currently available.

$75 Price in € submitted Jun 26th 2020, 19:34 by onurkalaycioglu | last Change Jun 26th 2020, 19:36 by onurkalaycioglu
Specs are approved by the manufacturer

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