MiniVCF v1.1 - A 4HP Voltage Controlled Filter using a diode ladder design for Eurorack modular synth (Part 3/3: Main)
NOTE: This module is part of a three board design. Make sure to print all three PCBs!
This build is my take on Moritz Klein's diode ladder design. I added a clipping section and a second filter so you can crank up the resonance while keeping the output at reasonable levels.
The module also has a switch for lowpass or bandpass modes.
See more info on my website: https://benjiaomodular.com/post/2022-03-11-mini-vcf/.
WARNING: This module is UNVERIFIED. I have printed v1.0 and fixed errors I've found in that initial version. Print v1.1 at your own risk! I will post an update on Instagram as soon as I've verified v1.1.
Versions
v1.1 - Quick fixes (Unverified)
This version fixes issues found in the initial release.
- Fixed orientation of Cutoff and Post-LPF knobs.
- Updated toggle switch footprint to a bit more space.
- Swapped clipping LED positions. Positive clipping now at the top row.
- Added missing labels for OpAmps, adjusted some unreadable labels.
v1.0 - Initial release
This is the first release of the module. I got it to work, but has a couple of issues.
- Issue: Cutoff and Post-LPF knobs are wired the opposite way.
- Issue: Holes for the toggle switch a bit too tight.
MiniVCF v1.1 - A 4HP Voltage Controlled Filter using a diode ladder design for Eurorack modular synth (Part 3/3: Main)
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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