Molto Brutto is a series of DIY sound modules built ixnside tomato-soup-style tin cans. Every modules follow a set of simple guidelines:

• Fun as hell
• Inexpensive to build using common materials (tin cans and 3D-printed parts)
• Fully autonomous with onboard battery power
• Easy to repair and modify
• Open and accessible for anyone to recreate

Kernel Panic is a miniature synthesizer and noise box designed to fit inside a standard tin can. It uses electromagnetic interference as a source of random modulation, producing unpredictable bleeps, tones, and textures.

The project emphasizes:

• Simplicity in both circuit and code
• Low fabrication cost
• Customizability for builders and sound experimenters

Kernel Panic runs on an Arduino Nano and uses the Mozzi audio synthesis library.

All printable files are included in the repository. Use your preferred slicer and print with PLA or PETG.

Attach parts using small wood screws. Use hot glue or super glue for securing rings and finishing touches. The design is intentionally simple and a bit “punk” — feel free to improvise.

You can find PCB design files in the /kicad folder.

Below is the full bill of materials (BOM):

Code is based on the very nice and powerfull Mozzi library (ver 1.0.3), you can find more info about it here: https://sensorium.github.io/Mozzi/

Code logic as well as circuit design was heavily inspired by the incredible work of Hagiwo: https://note.com/solder_state

This sound module was first developped as a Eurorack 3 knob module, but I prefered to publish the more straight foward tin can version.