Citadel

January 22, 2026 · View on GitHub

A Eurorack adaptation of the Kastle 2 synthesizer platform.

This repository contains schematics, panel template, and build tools. For code examples, see the Kastle 2 repository – the code is compatible with both platforms.

Bastl Citadel Wave Bard

Developing using Citadel

Refer to the Kastle 2 Toolchain Install Guide for the complete instructions how to develop using the Kastle 2 / Citadel platform.

Soldering the connector

Warning

Soldering the connector and other board modification void the official warranty and you do it at your own risk.

Soldering the connector

Attaching the Raspberry Pi Debug Probe

Attaching the Raspberry Pi Debug Probe

Credits

Citadel developed by
Martin Klecl (@martinklecl), Václav Mach (@xx0x)

Supervised by
Václav Peloušek (@vaclav-bastl)

License

Schematics, Documentation, Templates, Printable 3D files
CC BY SA 4.0 license