Arduino Friendly Modular synth system

Nikolaj Møbius is experimenting with a modular synth system. The system consists of the following modules:

• Main Arduino Synth.
• STM filter (band pass, high pass, low pass).
• Echo Machine

See the videopresentation here (it is in Danish - you can fast forward to the end where you can hear the sounds)

The whole system is controlled via midi from ableton live. This enables him to make complex patterns and control the many boxes. The communication bus is midi and then there is sound as well. He can then wire as he sees fit.

The original synth was made many years ago and the toturial to build it yourself can be found here.