• MS20-VCF
  • MS-20 clones built around the LM13700 chip
  • ✔️ Simple MS20 VCF:
    • 1 LM13700 filter with a Low pass or High pass switch with CV for cutoff
    • Based on barton's version : (link)
  • ✔️ Double MS20-VCF
    • 2 filters in one, each with Low pass or High pass with a possibility to bridge them and get a band pass filter with CV for cutoff
    • Based on barton's version (link)

• ✔️ Basic DC mixer
  • 4 channel active mixer with mute option with DC coupling (Audio+CV)

• ✔️ 3x2 multiple
  • 3x2 passive multiple (3 inputs to 2 output each)
  • cascade the first input to all outputs if no other input is plugged in

• ✔️ RP2040 chord VCO
  • VCO clone, originally made by HAGIWO (link in japanese)
  • RP2040 chord VCO clone in SMD.
  • 5-polyphonic Chord VCO module. There are 8 types of tones. With a built-in quantizer and automatic harmonics function, if you input a suitable CV, it will play a nice chord progression.
• ⚠️ CD40106-VCO
  • CD40106 saw core oscillator based on Moritz Klein version (https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-vco/)
    • 4 waveforms
      • Saw
      • Square with PWM control
      • Triangle
      • Sine
    • 5 octave switch
    • 1v/oct CV, FM CV and PWM CV.
    • Sync input
    • Extender pins to future Sub octave extender

• ⚠️ Basic ADSR
  • Basic ADSR based on René Schmitz Fastest envelope in the West
  • All you need in an ADSR
  • Switch to have 2 different time constants for the ADSR

• ✔️ Distribution board
  • Basic Eurorack PSU distribution board, with 12 IDC headers.
• ⚠️ USB distribution board
  • Double USB receptacle to power 5V usb devices out of your eurorack case.

Cheers to @Sonosus for the labeling idea

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