Finished Pieces

Benjolin

The Benjolin is a relatively simple but wonderfully clever analog, complex sound generator designed by synth pioneer Rob Hordijk.

Here’s what Rob has to say about it on his website.
“The Benjolin is a ‘noise box’ that is ‘bent by design’, meaning that it always has a definite amount of unpredictability while it is still intuitive to play. The Benjolin features two eighteen-octave range voltage controlled oscillators that drive a ‘rungler’ circuit, circuitry that in essence uses a special interference technique feeding back into the oscillators to force them into wild chaotic behaviour.
A special slightly chaotic filter is both excited and modulated by the signals from the rungler circuitry processes, producing sounds between fat drones to grungy noise havoc.”


SOUNDS:



Here’s all the info that Rob has put online about building your own Benjolin:
*Benjolin forum*
*Instructions*
*Schematic*
*PCB*
*PCB parts layout*
*Parts list*


Here’s a slightly modified version of the schematic I put together.
New Schematic
The original version (linked above) is spread over 4 pages. I’ve consolidated it to one page and made a few changes to the labeling in order to make it easier for myself to read.


I’ve been working with the Benjolin a whole lot over the past year or so. See the links at the top of the page for some of the pieces I’ve built around this awesome circuit. I’ve listed a few modifications and additions worth checking out if you are considering building your own.
The mods can be found here.

Sounds

Sorry, no sound files for this piece.

2 Responses to “Benjolin”

  • 1

    Jon Raskin said:
    August 28th, 2012 at 1:37pm #

    I’m very interested in the Benjolin kit when you have it ready. I’m a Blippo Box user and a fan of Rob’s work.

  • 2

    * Casper Electronics » Archive » Groningen Maker Faire said:
    January 26th, 2013 at 6:32pm #

    [...] be demo-ing the NovaDrone and will have a few kits for sale. I’m sharing a table with Benjolin inventor Rob Hordijk. He’s bringing an epic modular system to try out. [...]

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