Eurorack

• All files are published under CC BY-NC-SA 4.0 if not marked differently

• DO NOT USE COMMERCIALLY!

• Build for yourself or for a friend, but do not sell builds, PCBs, pannels or any parts of the designes in this repository!

• Feel free to modify, copy and use all files provided here. If you want to publish derivative work, please do so under same license as original

• Any feedback and collaboration is very welcome!

• Please feel free to open an issue on the issues tab

Have you built a module and would like to say thank you? https://paypal.me/LorenzNeumann

Blattwerk - Betula

• 8 channels In/Out ADAT Interface
• Outputs are DC coupled
• Inputs can be switched with jumpers between AC and DC coupling (In 2 groups: channel 1-4 and channel 5-8)
• Low noise: -110dB
• Low THD: >0.01% @ 1kHz, -6dB(+-5Vpp)
• 22kOhm input-impedance, 1kOhm output-impedance
• 8HP
• All channels with bicolored indicator LED
• ADAT sync indicator LED
• No μController, no programming required, hardware only
• CC BY-NC-SA 4.0 DO NOT USE COMMERCIALY!
• small and dense SMD build (0603,TSSOP)
• 180mA @ +12V and 100mA @ -12V (Without connected ADTA-signal: 14mA @ +12V and 0mA @ -12V)

Blattwerk - Salix

• VCF based on the Moog Transistor Ladder Filter
• Compensation for loss of bass in high resonance settings via potentiometer
• 6,12,18,24 dB/Oct selectable via potentiometer or CV!
• 2 Inputs with attenuator for audio and CV
• Seperate V/Oct input.
• Input-Drive indicator LED
• 8HP
• small and dense SMD build (0603, SOIC, SOT-363!) Not a beginner build, please be sure to have some SMD-soldering practice!
• 45mA @ +12V and 25mA @ -12V
• quick demo: https://youtu.be/XMdGtwIK5IQ

Transistor Ladder VCF

• Deprecated version of Salix VCF
• VCF based on the Moog Transistor Ladder Filter
• Compensation for loss of bass in high resonance settings via potentiometer
• 6,12,18,24 dB/Oct selectable via potentiometer or CV!
• 2 Inputs with attenuator for audio and CV
• Seperate V/Oct input.
• Input-Drive indicator LED
• 8HP
• CC BY-NC-SA 4.0
• small and dense SMD build (0603, SOIC, SOT-363!)
• 45mA @ +12V and 25mA @ -12V
• PCB and Panel is available at synthCube
• Quick demo: https://youtu.be/XMdGtwIK5IQ

Dual Ears

• BETA!
• Modification of Mutable Instruments Ears
• 2 seperat channels of original design, no internal contact microphone
• no jumpers, fixed values for fast Envelope Follower and Gate-Threshold of 1V
• 4HP
• CC-BY-SA 3.0, Orginal schematics by Emilie Gillet
• small and dense SMD build (0603, TSSOP)