The Kastle 2 (Alchemist) is a compact, portable instrument that runs on 3‌‌‌‌‌‌‌ AA batteries or USB-C, so it can inspire you anywhere, anytime. It loves to jam with your other portable gear — sync it with the sync in/out ports, and use the audio input to mix external signals with the Alchemist’s output or run them through its built-in effects.

kastle 2 is also open synth platform based on RP2040 MCU with differnet firmwares to run. Their source code are published as well.

This design has no gerbers, nor pcb layouts published while have layout in pdf.

• Manuals and tutorials on Bastl website