ADDAC 503 Marble Physics CV Generator Eurorack Module


Newtonian physics on a modular synth!

  • Use realistic physics simulations to control your patch
  • Uni and bipolar operation
  • X and Y tilt
  • Wall elasticity
Functions: CV Modulation
Height: 3U
Width: 10hp

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Newtonian physics on a modular synth! The ADDAC503 Marble Physics is a CV generator based on the mechanics behavior of a marble on a tray.

Through this realtime physics simulator you'll be able to control several parameters that will affect the behavior of a model of a spherical object against a plane. You can tilt the plane or bump the marble with a certain strength, which will cause it to roll and bounce on elastic walls.

The model will output the object's XY position or velocity and you can control other physical parameters, like the walls' elasticity or the strength of a bump. When the marble hits walls the bounce output triggers and you can additionally lock the X axis for a one dimension simulation. Finally you can also set the overall speed of the simulation.

By controlling all of these properties you be able simulate several scenarios where the marble falls, gets gently pulled by gravity, orbits indefinitely or bounces on walls like a pinball. Truly engaging physics simulations!

  • Uni and bipolar operation.
  • X and Y tilt.
  • Wall elasticity.
  • Simulation Speed.
  • Bump with strength control and dedicated physical push trigger.
  • X axis lock for one dimension operation.

ADDAC503 Marble Physics . Oscilloscope View from André Gonçalves on Vimeo.


  • Format: Eurorack
  • Width: 10 HP
  • Depth: 5.2 cm

Control Voltage I/O:

  • CV inputs: ± 10v
  • CV outputs: ± 5v


  • Max current: 150mA
  • Bus Board Cable: 8 × 2 IDC (Doepfer style) connector

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