Hardware
The bzzzbz prototype (v1.0) uses a Raspberry Pi 3B+ as core of the system to exploit the capabilities of a Linux system with direct access to hardware. Custom electronics circuits are connected to the Pi's GPIOs in order to interface the Pi with the external analogue inputs: audio input and control surface.
(say that a finished prototyped box and compact surface-mount pi-hat will be developed when the current restriction mesures are over).