The SynthBerry Pi project consists of a stand-alone synthesiser which is capable of running patches created with Pure Data. Pure Data (Pd) is a visual programming language developed by Miller ...

[Pierre] is running his Pi headless, and allocated more RAM to the CPU. If you’d like to try this out for yourself, [Pierre] has a tutorial for setting up Pure Data with the Raspberry Pi.

Its got a Raspberry-Pi running Pure Data and Python scripts, with an Arduino connected to the sensors and actuators.