CAT's Eurosynth

This is my repository for my analog synth eurorack compatible modules. Files given via the "Gerber" directories are actual production data used for my own prototyping. Bugs are to be expected. Corrections for finished boards marked as "working" are done in KiCAD only.

Please read the "Known Issues" section given in this repository as "ReadMe.md" whenever appropriate.

License

Code (AVR projects): GPL3.0.

Code (STM32F projects): MIT license.

Hardware: CC BY-NC-SA 4.0

unless specified otherwise.

Custom Libraries

Most of the schematics and layouts use custom libraries since some of the stock libries are either buggy or unsuited for my designs. The libraries can be found here.

I am about to remodel all the KiCAD Files to use environment variables:

Variable	points to
KI_CUSTOM_MOD	Footprint Data (where all the .pretty stuff is hidden)
KI_CUSTOM_3DMOD	3D Model Data (where all the .3dshapes stuff is hidden)
KI_CUSTOM_SYMBOLS	Symbol Data (where all the .lib stuff is hidden)

Layout specific data (mainly front panel stuff) are stored in the corresponding folders. Most of the Links are absolute atm. I will change them as soon as the particular layout is modified.

Proper Aliases and other informations are given in these ReadMe's:

Published Designs

Standard Line

Collection of modules with no regard to size. These designs are based on either my own ideas and mistakes or published in so many places I can't figure out the original source.

Power Module (THT, Working)

Atari Punk Console (THT, Working)

Baby8 Sequencer (THT, Rework)

4Ch Mixer (SMT, Working)

Clock Divider (THT, Working)

Abakus (SMT/THT, Working)

Manual Gate (THT, Rework)

Envelope Follower (THT, WIP)

Vactrol VCF (THT, Working)

Classic ADSR (SMT, Working)

Slim Line

Slim Modules to cope with the ever increasing lamentations from my bandmates and wife. Also these designs are based on either my own ideas and mistakes or published in so many places I can't figure out the original source.

Single Attenuator (THT, Working)

Buffered Multiple (THT, Working)

Buffered Multiple SMD (SMT, Working)

Dual Sample&Hold (THT, Working)

Dual Sample&Hold SMD (SMT/THT, WIP)

Precision Adder (SMT, Working)

Rectifier SMD(SMT, Working)

VCA (THT, Working)

Clock Divider (SMT, Working)

Voltage Controlled Switch (SMT, Working)

Purely Mechanical

Some purely mechanical projects - blinds, cases,...

1TE Blind Panel

3TE Blind Panel

Cases

MFOS Clones

The basic electronic design was made by Music From Outer Space. The remodelling in KiCAD, slight adaptation, PCB layout and frontpanel designs are based on my own faults

RIP Ray Wilson

YuSynth Clones

The basic electronic design was made by YuSynth. The remodelling in KiCAD, slight adaptation (especially changes to +/-12V), PCB layout and frontpanel designs are based on my own faults.

Improved Steiner VCF (SMT, Working)

Original Build Documentation

Single balanced Modulator (THT/SMT, WIP)

Original Build Documentation

Haraldswerk

The basic electronic design was made by Haraldswerk. The remodelling in KiCAD, slight adaptation (especially to Eurorack format), PCB layout and frontpanel designs are based on my own faults.

Next Generation Formant LFO (THT, Working)

Original Build Documentation

Ken Stone / Cat Girl Synth

The basic electronic design was made by Ken Stone aka Cat Girl Synth. The remodelling in KiCAD, slight adaptation (especially changes to +/-12V), PCB layout and frontpanel designs are based on my own faults

Analog Switch Matrix (THT/SMT, Working)

Original Build Documentation

HAGIWO

The basic electronic design was made by HAGIWO. The remodelling in KiCAD, slight adaptation in hard- and software, PCB layout and frontpanel designs are based on my own faults.

The schematics are Public Domain, firmware is Open Source unless otherwise specified.

This part of the repository is made public with permission from HAGIWO itself. I really appreciate it.