Eurorack 3U

Brain Custard - 9 audio rate chaotic signals mixed to form 'neuron clusters' The idea is low frequency patterns will emerge from the mayhem. Really it will be vaguely controllable noise and lots of it.....with LEDs Latest Docs here. Important: The full...

10 stage Phaser/Flanger based on the Aries 329. It has 11 matched NPN pairs (BCM847) and a set of matched FETs. It is actually quite simple to match FETs, a circuit will be given in the build guide. Pretty much all surface mount, not suitable for...

Has phase modulated sync & pan-pulse output based on the Aries PMS-338 VCO. Currently shipping v7 PCBs   Latest Documentation  

The AI002 DIY synth kit is an updated take on a classic utility audio or cv mixer. All three inputs have a level control, with full clockwise allowing full volume prior to the summing mixer. The summing mixer is roughly at Unity when at 12’0 Clock...

Demos may be heard/seen here:http://home.comcast.net/~ijfritz/MiscProj/Threeler.htmhttps://www.youtube.com/channel/UC8mKuBoR8bfHTLYRJ1sl0RA"Several people have said this is the all-time best-ever filter. I don't know about that -- I've always been more...

A synth DIY classic and long-time favorite! The origins of the module are described here, courtesy of natural rhythym music: https://naturalrhythmmusic.com/lopass   Other good build and demo threads here: http://www.modwiggler...

  DIY Frames The heart of Frames is a 4-channel analog VCA under tight digital control. Through flexible input/output mixing and normalling options, it can be patched to serve the following purposes (among others): 4-channel attenuator/VCA...

The bong0 is a twin-T based drum module with a LED acting as a nonlinear resistor to give it some interesting characteristics. The trigger input acts as a normal input to get your drum sound. The input marked ‘in’ can also be used, or...

8hp Two PT2399 chips roped together in series, one with vactrol control and 4 different feedback paths. Latest docs here  

The RYO XNOR/XOR/NOT is a 4hp boolean logic module for Eurorack. This module is available assembled and as a Eurorack DIY synth kit. The XNOR/XOR/NOT module can be patched as two NOT gates and one 2-input XOR gate, one NOT gate, one 2-input XOR gate and...

The Router was developed to use in the cellF neural synthesizer at MoNA’s Mofo exhibition in Jan 2017. As cellF would be left running for 6-8 hours per day, we wanted a module to periodically switch around the CV signals to create new patches. The...

The AI001 Multiple Eurorack Synthesizer Module is a 1x6 or a 2x3 passive multiple in only 2hp! It is critically important to be able to split and distribute your modular's signals to multiple destinations with the AI001 Multiple Eurorack Synthesizer...