Erica Synths Unleashes Its DIY Polivoks Eurorack Modules & Makes Them Open Source

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Erica Synths gives a new life to its discontinued Polivoks inspired DIY modules and makes them available as open-source project

At the end of last year, Erica Synths announced that its DIY Eurorack modules, which include various Polivoks replicas, will no longer be continued. Now the Latvian company is going one step further: all discontinued modules are now open source, which means that they can be replicated or even serve as the basis for new exciting projects.

This is a very welcome step because, with these, the growing and growing  DIY Synthesizer community gets more material with which they can work without being tied to a company. Also, they can solder many Eurorack modules for very cheap. With knowledge of soldering, entry into Euroland is very affordable with these modules.

Erica Synths DIY Eurorack

We created Gerber files for PCB-made front panels and did slight changes in module design in order to get rid of custom and rare components, however some modules still require rare ICs which are available here

Projects are available on Github, and each project folder contains complete information and files to build a module: schematics, Gerber files for a front panel, Gerber files for PCBs, BOMs, component placement with values and designators and assembly manuals (please, note that some manuals are designed for older module versions). By making these projects open source, Erica Synths accepts third party use for personal, educational or commercial purposes.

Open Source Are:

  • Bassline – all in one synth voice for acid basslines and drones
  • BBD delay/flanger – all analogue effects unit based on V3205 BBD IC Delay – tape and digital delay unit with tap tempo, tempo sync, reverse, hold and add functions
  • Dual VCA – Polivoks architecture inspired dual VCA, rare Russian differential opamps are now replaced with AS3330
  • Envelope – recreation of Polivoks envelope generator with loop and end of attack functions
  • MIDI-CV – Polivoks functionality inspired dual MIDI-CV converter with glide function
  • Mixer – simple 3 chanel audio mixer
  • Modulator – Polivoks functionality inspired LFO, noise and S&H module
  • Output – Output module with headphone amplifier
  • Polivoks VCF – authentic recreation of the Polivoks VCF
  • Swamp – our take of Wogglebug module with lots of unique extras
  • VCO3 – Polivoks inspired VCO with nice extra – VCO Sync input

Erica Synths will not provide any support for these projects, please, refer to forums (Muffwiggler) for information on build nuances, troubleshooting, part availability or alternatives.

More information here: Erica Synths 

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