Open source parametric stringed instruments

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Open source parametric musical instrument model that can be tailored to any size

This is a parametric stringed instrument generator that can create anything from a pocket ukelele to a triple bass. The instrument geometry is derived from a spreadsheet; variables such as number of strings and length of strings are produced from the geometrical skeleton file. The present functional version of marabunta is dependent on autodesk inventor; soon a version will be released that uses a python scrypt in Blender to create the model geometry.

The instrument is open source, and designed so that anyone can fabricate it with a CNC machine.

Digital functionality for creating MIDI/DMX will also be integrated for controlling the instrument with the teensy development platform.

also, from ye previous year, some of the FPGA functionality may be added.

DWG Drawing - 4.13 MB - 10/08/2018 at 15:43


DWG Drawing - 1.27 MB - 10/08/2018 at 12:58


  • 1 × teensy 3,2
  • 1 × optical proximity sensor
  • 1 × battery Evaluation, Demonstration Kits, Boards and Modules / Evaluation Kits, Boards and Modules

  • File:Spider Wasp 2012-06-04-10.42 (27445676044).jpg

    Andrew Benson10/16/2018 at 09:08 0 comments

    "An orphan picture. Other than it is a spider wasp and came from the county I work in I don't know much more about this azure beauty. It was taken when we were first setting up the camera rig in likely just fell between the cracks."

  • Robot Spider Hatchery

    Andrew Benson10/12/2018 at 08:44 0 comments

    Worth noting that both the 3d printer and the camera were purchased with money from an earlier entry.

  • Rocktober

    Andrew Benson10/11/2018 at 02:30 0 comments

    Marabunta is on hold until the Denver Maker Faire ends this weekend. I will be hosting two booths, the robot spider petting zoo and the levitating laser vaporizer in the Colorado Inventors Showcase. The spiders are closely related to Marabunta, running a custom linux OS that was designed to function as a universal audio workstation. If all goes well, the Marabunta instruments will soon be able to control a swarm of tap dancing robot spiders.

  • Naming Conventions

    Andrew Benson10/10/2018 at 05:38 0 comments

    I tend to name my instruments after insects and spiders; When I started this project, I called it the hornet. It turns out that there is a hornet bass already on the market, even though there is no hornet guitar. As this system is designed to be capable of creating guitars, basses, mandolins, etc... It seemed worth it to change the name, and avoid the confusion of being the second electric bass called the hornet. Marabunta is a South American colloquialism for hornets that hunt spiders, and is an uncommon enough term that I was able to score the domain for

  • schema

    Andrew Benson10/08/2018 at 16:23 0 comments

    underpants gnome scheme:

    create documentation on how to fabricate AN instrument, then rebuild structural geometry

    release geometry, and translate geometry to python/blender

    collect prize

    (pirate voice) steady as she goes

  • derple

    Andrew Benson10/08/2018 at 15:22 0 comments

    this is the midi control test... teensy 3.0

  • 4 string bass

    Andrew Benson10/08/2018 at 15:19 0 comments

  • Mandocello

    Andrew Benson10/08/2018 at 15:18 1 comment


  • .Gitfiddle

    Andrew Benson10/08/2018 at 15:14 0 comments

    backlog: multiscale guitar

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jerome wrote 11/04/2018 at 13:17 point

I, m very interesting by your project. Could you post your file in dxf format please

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