A Eurorack Developer Platform

Developer Blank is a placeholder for your own firmware running on the open Alchemy Lab platform. Add it to your rack to stand in for
whatever you build.

The hardware is field-programmable: a (Daisy Seed2) STM32H750 at 480 MHz with 64 MB SDRAM and 16 MB flash, stereo audio in/out up to 96 kHz / 24-bit, six pots ringed with LEDs, three buttons, 102 addressable RGB LEDs, and six CV jacks each configurable in firmware as CV in or out. Front-facing USB-C handles MIDI and DFU flashing; a rear micro SD slot and SPI/I²C header cover storage and expanders.

Firmware is built with the MIT-licensed Alchemy SDK — familiar Daisy APIs extended with board support and a richer UX layer: LED animations, pagination, parameter lock, pot catch, presets, clock sync, and on-device settings. Bring your DSP; the UX primitives are ready. Front panel design and manufacturing templates are included for custom panels.

GitHub