Hey, interesting timing! A friend and I are collaborating on an arduino/atmega328-based euroack module that will have an e-ink display and I’m almost done with the hardware design. It will be a 4 cv-in / 1 gate-in / 4 cv-out / 4 pot module with this adafruit display https://www.adafruit.com/product/1028
This is my second time laying out a eurorack module (first was a 4-hp SMD redesign of the Bastl Kompas, which I’ll share somewhere soon). This means my design might have some oversights, below is my schematic if you’re curious. I’m especially unsure about the DAC op-amp buffering/scaling I pulled from https://github.com/holmesrichards/dac_ino
Given that my collaborator isn’t equipped for SMD work, I designed it as a through-hole. Note that the huge hole in the middle of the board is a temporary placeholder for where the screen will be.
phoretic_schematic.pdf (145.1 KB)
Anyways, we aren’t exactly sure how we’ll program it yet, but are very excited about the idea of making the slowest sequencer to eurorack.
If it ends up working and folks are interested doing some programming for it, I’d happily send out some pcbs. And of course all of this is based off of amazing open-source work by Bastl, Mutable Instruments, and many others, so I’ll be sure to post all the kicad and gerber files.
