DIY Kits
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This is the newest version of the MinEQ, it adds a rectified clipping feedback circuit to the EQ which produces a wider range of harmonic distortion, interactive self-oscillating, pseudo ring modulation, and richer filter esque timbres based on the input and knob positions. The new version does not invert the input anymore and does not self oscillate without an input present.This hybrid Baxandall circuit provides +/- 20dB~ of boost or cut control over the Low, Mid and High frequency bands of an audio input. The circuit is capable of up to 20vpp~ of boost(with a 10vpp signal) and attenuation down to 1-2vpp depending on the input. The frequency bands are centered near 30Hz(Low), 1kHz(Mid), and 10kHz(High). With all the potentiometers at noon, the MinEq passes the signal relatively unaltered.The Panel is reversible, one side with graphics and soulless side with less graphics.DIY-Kit-Type:SMD-Kit-2. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. It includes SMD and through-hole parts! For build guide, more info, videos etc. please check the buttons below.
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Dual summed mute Attenuator, Offset Generator, Mixer, and Mute in 2HPThe newest 666 version (2021) can be powered and will provide Offset of 0-5V with nothing plugged into the “IN” for each channel controlled by each respective Potentiometer. The “Sum Out” will also be able to send out 0-10v~ volts depending on the setting of each Potentiometer. Both channels are normalled to the sum, so inserting a signal into an “IN” will remove it from the “Sum Out. There will be signal loss at the sum out, because the module is passive. Great for cv or audio although the module ships with linear pots.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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This is the panel PCB version of this kit.Dual summed mute Attenuator, Offset Generator, Mixer, and Mute in 2HPThe newest 666 version (2021) can be powered and will provide Offset of 0-5V with nothing plugged into the “IN” for each channel controlled by each respective Potentiometer. The “Sum Out” will also be able to send out 0-10v~ volts depending on the setting of each Potentiometer. Both channels are normalled to the sum, so inserting a signal into an “IN” will remove it from the “Sum Out. There will be signal loss at the sum out, because the module is passive. Great for cv or audio although the module ships with linear pots.DIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
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User configurable 3 Channel Unity Gain Audio or Control Voltage Mixer in 2HPThe newly revised MiniMix is now all through hole and aimed more to the beginner solderer. There is also a trimmer on the PCB to increase the master gain up to 2 or more for all 3 channels.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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This is the panel PCB version of this kit.User configurable 3 Channel Unity Gain Audio or Control Voltage Mixer in 2 HPThe newly revised MiniMix is now all through hole and aimed more to the beginner solderer. There is also a trimmer on the PCB to increase the master gain up to 2 or more for all 3 channels.DIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
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The Push VCA is a 2 Channel DC Coupled Mute Eurorack Module in 2 HP. It features 2 independent unity gain DC coupled VCAs with led push button mutes. A mix of both channels is available at the sum, but all outputs are available simultaneously. The newest version has normalizations to +5v, so with nothing plugged into the ins voltage can be toggled on and off at the outputs and up to 10 volts can be output at the sum. The buttons are latching, not momentary push buttons. LED button color may vary, but it will always be two of the same color.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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This is the panel PCB version of this kit.The Push VCA is a 2 Channel DC Coupled Mute Eurorack Module in 2 HP. It features 2 independent unity gain DC coupled VCAs with led push button mutes. A mix of both channels is available at the sum, but all outputs are available simultaneously. The newest version has normalizations to +5v, so with nothing plugged into the ins voltage can be toggled on and off at the outputs and up to 10 volts can be output at the sum. The buttons are latching, not momentary push buttons. LED button color may vary, but it will always be two of the same color.DIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
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Analog skew-able xfade-able LFO Eurorack Module capable of a plethora of waveforms in 3HPIt has three rate settings ranging from 3 minutes and 30 seconds a cycle up to audio range at 20 hz. Triangle waves can be skewed between ramps and saws, and square waves pulse width can be adjusted from inverted triggers to triggers. The LFO’s unique feature is voltage controlled cross fading through the (“Fade C.V.” in) between square/shark tooth\sine waveforms provided at the “Fade Out.” All outs are also influenced by the skew knob resulting in many complicated and asymmetrical possibilities at the “Fade Out.” It can even be self patched(ie triangle or square into fade cv) for an extended pallet of waveforms. The “Fade C.V.” in expects a bipolar voltage 10vpp to fade from square to sine with the fade pot at noon position. Bicolor led provides constant display of positive and negative voltage crossings.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
available
This is the panel PCB version of this kit.Analog skew-able xfade-able LFO Eurorack Module capable of a plethora of waveforms in 3HPIt has three rate settings ranging from 3 minutes and 30 seconds a cycle up to audio range at 20 hz. Triangle waves can be skewed between ramps and saws, and square waves pulse width can be adjusted from inverted triggers to triggers. The LFO’s unique feature is voltage controlled cross fading through the (“Fade CV” in) between square/shark tooth/sine waveforms provided at the “Fade Out”. All outs are also influenced by the skew knob resulting in many complicated and asymmetrical possibilities at the “Fade Out.” It can even be self patched(ie triangle or square into fade cv) for an extended pallet of waveforms. The “Fade CV” in expects a bipolar voltage 10vpp to fade from square to sine with the fade pot at noon position. Bicolor led provides constant display of positive and negative voltage crossings.DIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
sold out at the moment
The SVF 2 pole 12dB State Variable Filter Eurorack Module in 4HPIt provides Low Pass, Band Pass, and High Pass outs inspired by WASP and Thomas Henry filter topologies. The filter has 2 audio inputs, but channel 2 is jumper selectable between standard audio in or Ping-able operation. The 2019 revision also adds improved cutoff and resonance response and attenuversion through the ACV IN using the above pot. CV IN provides another unattenuated voltage input to modulate the frequency.At the CV in, +10v will open the filter completely if the cutoff pot is CCW(counter clockwise). With the cutoff knob at noon the filter can be opened with +5v or closed with -5v. CV input at the ACV in is dependent on the CV attenuverter knob.There are also several jumper selectable modes for max resonance, self oscillation or no oscillation based on the setting of the resonance pot. According to the jumper configuration, the filter is capable of clinical and clean, to juicy and drippy, to low pass gate sounding plonks, to screaming chaotic resonance. When set to self oscillation mode, the filter can produce a sine like wave with no input and a trapezoid like wave in the max resonance jumper setting. In max resonance mode, the filter output can exceed 10Vpp. On the newest version, there is a trimmer on the top pcb to set the lowest cutoff frequency.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The Trepanator is a 14 HP analog “Bent by Design” experimental instrument featuring a Dual VCO, Difference Rectifier, 3-band EQ, Sample/Track and Hold, and SVF (state variable filter) all built into one nonlinear module. Its origins trace back to a love for Rob Hordijk’s Benjolin and patching a similar pseudo chaotic feedback-based instrument from scratch using all Zlob modules.Although not based on Hordijk’s circuit or signal flow, it uses a similar architecture of dual voltage controlled oscillators, an “interference pattern generator,” a state variable filter, and internalized cross-patched feedback. Instead of a Rungler and comparator the Trepanator uses a sample/track and hold with slew, a difference/rectifier circuit (based on NLC), and a self-oscillating 3-band EQ. Utilizing this excessive feedback between the VCO’s, EQ, S/H, and SVF, creates a completely new instrument for discovering abstract electronic sounds. The Trepanator is a highly interactive, unpredictable, and an immediate instrument capable of a huge range of organic and sounds from: snarling, plucking, bubbling, screaming, gurgling, hissing, grunting, pinging, and quacking, to machine like rhythmic loops, circuit bent broken modem sounds, no-input mixer screeching, intermittent short wave radio fizzling, and full on Harsh Noise Wall all within the touch of a fader or a small knob turn without any external audio or any control voltage in.Double Sided PCB panel with Classic and Soulless.For more info consult the manual below and signal flow chart.RIP Rob HordijkDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The Triple Cap Chaos(C^3 Chaos) is a 2hp analog, chaos based, noise oscillator, pseudo ring modulator/harmonics generator, and audio mangler.It is a unique module, like the Diode Chaos, because it has never existed as a musical instrument until now. There is also no other module to my knowledge that can do exactly what the Triple Cap can do. The circuit(with several modifications) is based on the paper “Simple Autonomous Chaotic Circuits” by J.C. Sprott and Jessica R. Piper. As opposed to the Diode Chaos that generates control voltage this module focuses on the audio rate.The “Emanate” potentiometer controls the coarser overall spectrum of the chaos, from lots of activity counter clock wise up to less chaos and more of a steady oscillation. The “Width, CV ATT” potentiometer can be thought of as more of a fine control for the chaos/oscillator. When something is inserted into the “CV” in the voltage normalization from the width knob is broken and the potentiometer now acts as an attenuator for the incoming cv. The Triple Cap is not a traditional volt per octave exponential VCO, and has a sort of narrow frequency range to exploit the chaotic behavior.It expects a +5v to -5v max signal in to modulate the chaos. The “IN” jack is an A.C. coupled input for audio in, although cv and audio can work for both the “CV” in jack and “IN.” The “IN” will interfere and interact with the onboard chaotic oscillator depending on the frequency of the input, which may take some experimentation. It can create ring mod ish sounds, to added harmonics, to almost bit crushed sounds depending on the “X” or “Y” output. The “X” output is a more windy noisy sinusoidal based output and the “Y” output is more squared off and aggressive, harsher sounding output.Some quirks about the Triple Cap: The “X” output can offset negatively or positively a little bit depending on the pot settings, but both outputs tend to stay around 10vpp. With the “Emanate” and “Width” pots all the way up the typical frequency will be around 150hz although some will reach 200hz at this setting. With the “Emanate” pot full counter clock wise “Width” pot full clock wise the frequency will be around 250hz. It is possible to send signals into the triple cap that can bring it out of the desired range causing the oscillation to cut out.The Triple Cap has a double sided panel. meaning one side has the classic graphics and the other is Soulless with less graphics.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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VC F3DB stands for Voltage Controlled Fixed Filter Feedback Distortion Bank. The simplest description is it’s an analog 16hp six band voltage controlled fixed filter bank. But with the additions of so much gain, clipping, feedback, and self-oscillation it becomes a very flexible and unique gestural sound sculpting tool capable of; graphic equalization over 6 octaves, multi-band distortion, spectral processing, crude vocoding, multi-frequency envelope following, self-modulation, and even as an instrument on its own. With no input it can be used as a pseudo chaotic “harmonic” feedback oscillator.The filter frequencies were specifically chosen to emphasize more ambiguous and dissonant intervals. Although the frequency bands are spread out over many octaves I purposely tried to leave out “3rds” besides a major 10th at the top frequencies to even out all the dissonance below. But the frequencies aren’t exactly equal tempered, so it’s relative. The bands roughly equate to F2, B3, F#5, C6, F7, A8.The design is based on the Moog 914 filterbank, which it borrows the frequency bands from. But this circuit uses active filters with opamps inspired by YU Synth opposed to passive cells using inductors on the original. The 88hz is a low pass -24db/oct and 7k is a high pass -24db/oct, the rest are -12db/oct band pass filters all with a Q around 4.The hard and soft clipping circuit on the input is fairly standard which appears in many different iterations of classic guitar pedals. But it has a lot of gain and can even boost line level signals. What makes it a bit unique is the feedback on the clipping circuit which needs to be turned on by the GFB(gain feedback) switch and the amount can be controlled by the Gain FB pot which can add some fuzz/bite to the signal depending on which clipping switch is engaged or at the extremes it will self oscillate from audio rate to LFO sort of clicking range. All the clipping stages in the module are using silicon diodes.Consult the Signal Flow Chart to the left for a rough visual breakdown of the controls,in/outs,normalizations, and optional settings for the module.Each band can also be muted by the top toggle switches or clipped(at the VCA) by the top slide switch which makes this design a bit different than other filter banks. As well as the overall feedback section(bottom middle) takes the sum/all bands out through a VCA(controlled by the feedback pot and FB CV) back to the input gain/clip circuit. and you can also tap into this using different sends/bands to the FB In jack to break the normalization. With this extra feedback “resonance” you can get more whistley and howly filter sounds kinda like the Serge res eq, which can also go into self oscillation.All CV ins are expecting +5v to open the VCAs (they wont respond to negative voltage), once you get closer to +8v or so it can clip the VCA regardless of the gain settings or clip switches. Output amplitude in high gain settings will exceed 10vpp and can get up to 20vpp. The envelope followers tend to stay around 0-5v out, but with clip switch active they can go up to 10v.Since this is a high gain module there can be bleed between the bands in certain configurations and situations. Also in high gain modes with higher frequencies the 2.8k and 7k bands can bleed a little with the VCAs closed.This is a highly involved DIY all through hole project. It is a long build with 5 different pcbs to solder and assemble.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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This is the panel PCB version of this kit.VC F3DB stands for Voltage Controlled Fixed Filter Feedback Distortion Bank. The simplest description is it’s an analog 16hp six band voltage controlled fixed filter bank. But with the additions of so much gain, clipping, feedback, and self-oscillation it becomes a very flexible and unique gestural sound sculpting tool capable of; graphic equalization over 6 octaves, multi-band distortion, spectral processing, crude vocoding, multi-frequency envelope following, self-modulation, and even as an instrument on its own. With no input it can be used as a pseudo chaotic “harmonic” feedback oscillator.The filter frequencies were specifically chosen to emphasize more ambiguous and dissonant intervals. Although the frequency bands are spread out over many octaves I purposely tried to leave out “3rds” besides a major 10th at the top frequencies to even out all the dissonance below. But the frequencies aren’t exactly equal tempered, so it’s relative. The bands roughly equate to F2, B3, F#5, C6, F7, A8.The design is based on the Moog 914 filterbank, which it borrows the frequency bands from. But this circuit uses active filters with opamps inspired by YU Synth opposed to passive cells using inductors on the original. The 88hz is a low pass -24db/oct and 7k is a high pass -24db/oct, the rest are -12db/oct band pass filters all with a Q around 4.The hard and soft clipping circuit on the input is fairly standard which appears in many different iterations of classic guitar pedals. But it has a lot of gain and can even boost line level signals. What makes it a bit unique is the feedback on the clipping circuit which needs to be turned on by the GFB(gain feedback) switch and the amount can be controlled by the Gain FB pot which can add some fuzz/bite to the signal depending on which clipping switch is engaged or at the extremes it will self oscillate from audio rate to LFO sort of clicking range. All the clipping stages in the module are using silicon diodes.Consult the Signal Flow Chart to the left for a rough visual breakdown of the controls,in/outs,normalizations, and optional settings for the module.Each band can also be muted by the top toggle switches or clipped (at the VCA) by the top slide switch which makes this design a bit different than other filter banks. As well as the overall feedback section(bottom middle) takes the sum/all bands out through a VCA (controlled by the feedback pot and FB CV) back to the input gain/clip circuit. and you can also tap into this using different sends/bands to the FB In jack to break the normalization. With this extra feedback “resonance” you can get more whistley and howly filter sounds kinda like the Serge res eq, which can also go into self oscillation.All CV ins are expecting +5v to open the VCAs (they wont respond to negative voltage), once you get closer to +8v or so it can clip the VCA regardless of the gain settings or clip switches. Output amplitude in high gain settings will exceed 10vpp and can get up to 20vpp. The envelope followers tend to stay around 0-5v out, but with clip switch active they can go up to 10v.Since this is a high gain module there can be bleed between the bands in certain configurations and situations. Also in high gain modes with higher frequencies the 2.8k and 7k bands can bleed a little with the VCAs closed.This is a highly involved DIY all through hole project. It is a long build with 5 different pcbs to solder and assemble.DIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
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The Vnicursal VCA is an 6 Channel VCA Eurorack Module in 8 HP. It the smallest, most compact Voltage Controlled Amplifier in the Eurorack market. It provides 6 OTA(LM13700)-based DC Coupled Linear VCAs for Audio or CV. The 6 VCAs are summed together so it can be used as a voltage controlled mixer. Each VCA is normalled to the sum so they can be removed from the mix and used on their own. The potentiometers control the amount of gain, and when a voltage is inserted into the CV in the potentiometers act as attenuators. With a control voltage of 5 volts the VCA will be at unity gain, anything above that can clip the input. LED brightness with or without CV in provides constant feedback of each channels amount of gain.The Vnicursal is not a perfect scientifically spec’d VCA. Analog VCAs can only close so much, or be so silent. In certain situations based on power supplies and gain stages the VCA can experience some bleed or noise mainly at the sum out as all channels are passively summed then buffered.DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.