Hi everyone,
i designed two breakout PCBs for the Daisy Seed // after frying a seed 
//
they can be helpful for prototyping, especially when working with eurorack signals.
– DC DC converter and input / output opamps board - Seed breakout Easy EDA project
– Eight channel input protection and multiplexer board - protection and mux Easy EDA project
Gerber files and boms also on Github
When using long headers it can be plugged into a breadboard for fast prototyping while using the clean power and the op amps. Bit fiddly to install on breadboard, but once in place worth the hassle.
To install on breadboard i use long female headers.
→ Daisy seed with normal male headers plugs in the female headers
→ female headers through PCB plug into breadboard.
All daisy pins are then available on the breadboard, audio in and out through opamps are available, as well as +/- 12 Volts.
Eight channel input protection and multiplexer board
Scales Eurorack level -/+ 5 Volts to safe 0 – 3.3 Volts, these scaled signals can be used directly or via the multiplexer thats on board.
The daisy seed breakout boards are an open source project. The schematics and PCB designs are licenced as CC BY-NC-SA 3.0.
For the daisy seed power management and op amps i refered to:
kxmx blümchen and daisy patch by electrosmith
For input protection:
kxmx blümchen and Mutable instruments clouds
For multiplexing:
@Takumi_Ogata electrosmith tutorial
Microsite with relevant links and Github with Gerbers, boms and links to Easy Eda.
These boards helped me a lot interfacing the seed with eurorack, so i figured it could be useful for others too.