A voltage-controlled filter based on a diode ladder topology with resonance control and cutoff modulation.
Documentation: modules — VCF
Product page: microrack — VCF
Made in collaboration with Moritz Klein
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A cool idea indeed: you can make a separate forum branch with documentation (and major documents pinned on top) 
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Wow! This concept has definitely caught my attention; especially with (I assume) use DSP creations?What filter architecture/toplogy are you using for this filter module? Also, I see you mentioned the modules are hackable; are you going to have a dev board module configured for implementing user created analog filters?
Looking forward to see more interesting implementations as well!
This is old MS-20 diode ladder filter like. We use schematics from Moritz Klein videos with some simplifications in resonance circuit.
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We had dev module, but after some experiments I understand it’s easier to mockup schematic directly on the breadboard between the modules. Maybe we add some helper modules as „just N potentiometers”, like in Bleep’s Rad-Fi concept
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Mentioning the rad-fi system the rad-fi delay could be an amazing module to add to this system if you’re able to work with/get permission off of bleeplabs to produce one.
As I understand, Rad-Fi use Teensy or even Atmega8 for glitch delay?
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Pulled this from the the bleeplabs page
“Is it / why isn’t it an Arduino shield?
Both the Delay and Patchable Synth contain an ATMEGA328 running the Arduino bootloader. Instead of having a dedicated shield the devices are all on the breadboard so they can be infinitely modified and made into something completely new”
Had a look at their github and everything is still up and some stuff was updated as little as 10 months ago.
Slept on this kit many years ago as i was even more of a novice than i am today with diy kits haha
Module description was updated!
Band pass function not planned? Maybe in separate module?
We discussed this and decided to hold off on the bandpass function until the next version of the module. In my opinion, a bandpass isn’t absolutely necessary, and the resonance filter already provides a good bandpass response
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