This is a full kit, you just need to provide the tools and solder. We include high quality Op-amps as specced by the designer and also went the extra mile by including 25 0.1% precision resistors to maintain an accurate stereo image during the matrix and de-matrix processes.

The LRMSMSLR brings the power of mid/side processing to the world of Eurorack. Mid/side processing is a powerful tool often utilised in mastering studios; it takes a stereo signal and separates it into the mid and side elements, allowing you to independently process them and then recombine them into a stereo signal.

Used creatively this allows a sound designer to do anything from using two filters with differing responses on a stereo signal without having to perfectly match them for a balanced stereo response, to using a VCA to modulate the stereo width at audio rates to add harmonics to a stereo signal, to techniques which haven’t even been invented yet. The outputs are DC coupled so the LRMSMSLR can be used to get a sum and difference from two CV signals to create complex dynamic CV signals from plain old LFOs and envelopes.

LRMSMSLR has two four inputs and four outputs in the following order:

• Left & Right signal in
• Mid & Side signal out
• Mid & Side signal in
• Left & Right signal out

The Mid out is half-normalled to the Mid in, as is the Side out to the Side in. This means Left and Right in and out can be patched in, passing the stereo signal through unaltered to the Left and Right outs until the Mid and Side inputs are patched in. This allows you to AB any processing by simply pulling out the jacks on the MS inputs.

The LRMSMSLR uses high quality low noise opamps throughout for studio quality sound.

Schematic and discussion of this design: https://www.muffwiggler.com/forum/viewtopic.php?t=142881

The Beast Box from Beast-Tek is 16 bit Mono Synth Voice in Pedal format designed to create wild and driving tones. The Beast Box is controlled via MIDI and features 16 different waveforms that are 16 bits in resolution – starting with Sine, Triangle, Tri-Square, Ramp, and moving through to non conventional / weird shapes – the last waveform is noise. The destroy switch enables a special XOR distortion which causes the main oscillator to be digitally XORed with the sub oscillator. The output VCA features a Vactrol based circuit with switchable long and short decay settings. There are also controls for internal FM, AM and feedback.

Beast Box – Assembly Guide

Features:

• 16 Waveforms
• Sub Oscillator
• MDI DIN input
• FM and AM
• Switchable XOR distortion circuit
• Vactrol based VCA circuit

Power Supply required: 5 – 12v DC with 250ma or more and center positive tip.

The Plutonium-239 Hyper Fist is a post-apocalyptic wavetable VCO with a resonant lo-fi feedback delay that specialises in spacey drones and screechy glitches. The Hyper Fist can also function as a regular wavetable VCO with on-board PWM and Waveshaping. The module features a clock input which can be clocked at audio rate to produce AM effects or at slower note/beat rates to produce interesting percussive synchronisation.​

User Manual

Patch List

Build Guide

Specifications:

• 8bit Grain table sound module
• 31khz / 10.5khz internal sample rate
• PWM Audio @ 76.5khz
• FREQ/MOD1/MOD2: -5 ..+5v safe but effective range 0..5v
• Clock input: 0-5v only
• On board 5v regulator, only +12/-12v rails required
• Current Draw Approx 58ma on +12v rail
• 14HP Dual Layer Acrylic Panel @ 3mm total thickness

The Dirty Glitch VCO is a highly experimental digital oscillator, harnessing grain table synthesis driven through dual glitch engines to produce sounds. This module has 1000 grain table patches to choose from – with a useful patch list provided for reference. The first 90 patches attempt to be more musical, like a contemporary VCO…make sure the delay (CLK RATE knob on these patches) is in the centre position to access all of the available tones. The following 910 patches are just outright bizarre, containing various clock, internal step-sequence and LFO / knob based modulations and weirdness as per the patch list. Aside from use as a VCO, Dirty Glitch can also be used as a highly interesting modulation source or produce some really unusual percussion sounds in conjunction with a VCA.

User Manual

Patch List

Build Guide

Specifications:

• 8bit Grain table sound module
• 31khz / 10.5khz internal sample rate
• PWM Audio @ 76.5khz
• FREQ/MOD1/MOD2: -5 .. +5v safe but effective range 0..5v
• Clock input: 0-5v only
• On board 5v regulator, only +12/-12v rails required
• Current Draw Approx 58ma on +12v rail
• 14HP Dual Layer Acrylic Panel @ 3mm total thickness

The Amoeba is a multimode Cellular/Algorithmic rhythm sequencer for creating complex and evolving rhythm patterns. At the core of Amoeba is an artificial intelligence based 8 channel algorithmic rhythm engine with full CV control to manipulate beat patterns. In addition to two beat modes, there is a rotating clock counter mode, rotating clock divider mode and cellular automation based mode.

• Clock Counter mode can be used to count beats, bars and measures.
• Clock divider mode can be used to obtain many different clock and beat divisions.
• Cellular Automation mode allows the manipulation of organic trigger patterns from a cell grid based loosely on Conway’s Game Of Life algorithm.
• Cell sampling shape, rotation and sampling position can be controlled to obtain a myriad of different patterns.​

See the User Manual for more detail on each mode. Ameoba – User Manual | Build Document

The White Gallop is a limited edition companion of the Shakmat Knight’s Gallop. The White Gallop is less focused on the algorithmic side of rhythm generation and instead provides more assymetrical and unusual patterns. There is also a useful new weapon : the auto-reset function – allowing you to easily reset the generated sequences after 8 or 16 steps.

Just like the Knight’s Gallop, this module is endowed with the same modes and sub modes allowing utility, computational and randomish treatment of the patterns. Of course, we also kept our beloved dual and record modes. White Gallop has the same workflow as it’s predecessor but delivers a totally different rhythmic feeling, ideal for creating interesting rhythms and polyrhythms.

White Gallop – Build Guide | User Manual | Cheat Sheet

Features

• Dual Output Trigger Generator
• Variable length sequences (up to 16 steps)
• Length and Pulse amount potentiometers and CV inputs
• Shift + & shift – buttons allowing to shift the sequence forward and backward
• Main mode (MN) providing a lot of utility modes for the second output : reset, no shift, invert and reverse
• Compute mode (CP) calculating associated sequences for the second output delivering very musical polyrhythms
• Random mode (RD) adding randomness on the second output sequence, 4 amounts of randomness determined by the sub mode
• Dual mode (DL) allowing to set the two outputs separately
• Record mode (RC) turning the Knight’s Gallop into a “play your sequence on the buttons to record it” module
• Auto-Reset function which automatically resets the sequences after 8 or 16 steps
• Five different kind of tables for five different rhythmic flavours : As Straight as Possible, Length minus Pulse, Accelerando, Decelerando & Fill Next
• Elektron style push buttons
• High quality metal potentiometers with double rubber injected knobs
• Skiff friendly (25mm deep)
• Width: 8 HP

The Shakmat Modular Time Wizard is an 8HP sextuple clock divider. The module features individual division control for all six outputs and there are different division options available depending on the divider channel being used. The outputs are split into two sections – A and B. Each section can receive its own separate clock input if desired, and there is also extra functionality associated with both sections:

Section A has the ability to multiply incoming clock signals (either x3 or x4) before the clock reaches the dividers. This allows you to easily dial in triplets or create very unusual clock ratio’s – for example: multiply by 4 and divide by 7 at the same time.

Section B has the option to receive it’s own master clock from RST input on the front panel or internally from divider B4. This allows you to create further complex divisions from the dividers below. There is also a jumper on the back of the module that allows outputs B5 and B6 to be switched from triggers to gates.

The module features an internal auto-reset option which comes from divider B6. This can be switched on to affect either just Section A or all of the outputs. There is also a manual reset input on the front panel. Finally there are some additional logic function options for divider A2: This output can be switched to provide the following functions : A2 AND B5 or A2 OR A3.

Time Wizard – Assembly Guide & User Manual

Specifications:

• Size: 8 HP
• Depth: 22 mm
• Current Draw: 20 mA @ 12V, 0 mA @ -12V
• Trigger Inputs: 0 – 5V
• Outputs: 0 – 5V

These Soundcloud demos below are all untreated recordings direct from the modules. No external FX, processing, reverb, distortion or filtering has been added. This is what the modules sound like out of the box with trigger sequencing and external CV modulation. All drums are synthesised digitally, there are no samples!

Prok drum modules are a series of 4HP drum synthesis and morphing modules, consisting of a Bassdrum, Snare, Hi-Hat and Hand Clap. This module is the Handclap.

This partial kit includes:

• 1 x Black Aluminium CP Eurorack Panel (4HP)

• 1 x Prok PCB set

• 1 x Programmed Prok CP Teensy

• 1 x Illuminated Pushbutton

• 4 x Square LEDs

CP : Hand Clap

Take 3 noise sources : White, Pink and SID of course, mix them, waveshape them, run them through filters and special clap envelopes. Add a touch more filtering and some reverb. C C C CLAP. etc. There’s a huge variety of clap sounds available, from crispy X0X and Linn style to the tight RZ-1. Use the X and Y controls to find your sweet spot or create ever evolving drums by morphing between patches.

How Does It Work?

There are 4 banks of clap style to choose from, which you can switch between by long pressing the button on the front panel. Each bank contains four corners or ‘QUADS’, which are made up of four patches. This means there are a total of 16 patches per bank.

1 Bank = 4 Quads = 16 Patches

But this doesn’t mean there are only 16 sounds. That would be boring. There is a morphing engine which allows you to continuously move between the sounds within one quad. This isn’t just 4 channels being mixed by volume. All the parameters of the synthesis engine are modulated in real time to create a continuously variable galaxy of sound. Each module comes with a full set of patches built into the firmware : just turn on the module, send in a trigger signal and you’re good to go.

The Front Panel

4 Red Squares

1. Show current morph position
2. When changing Quad will flash to show which quad is selected

X & Y Knobs

Control the morph position between the 4 patches in the current quad.

SD Card Slot

Allows you to store and load custom patches

To load custom patches from the SD card hold the button at boot.

Button

Retrigger the sound. Hold down to switch quads.

X & Y CV

The CV inputs only respond to positive signals from 0v to 5v.

For full range control from CV leave the knobs at the zero position.

CV inputs are scaled across the remaining range from the knobs.

For example if the X knob is halfway then the CV will control X from 0.5 to 1.0 using the full range of CV input.

Trigger Input

Trigger the sound on a rising edge.

Audio Output

Mono audio output.

The Back of the module

The back of the module has three connections:

• Ten pin standard Eurorack power header
• USB connection for connection to software editor (coming in 2019)
• 6 Pin header for expansion (more news in 2019)

Software Editor

Download the software editor HERE

Documentation

Prok Drums Build Document, BOM and Manual

Open Hardware

Prok Drums are open hardware, they are a modified version of the Music Thing Modular Radio Music module by Tom Whitwell and have the Creative Commons license CC-BY-SA: Attribution / ShareAlike. If you use any work from this hardware, you should credit Tom Whitwell, and you must republish any changes you make under the same license. The Prok Drums Eagle PCB projects are available under the creative commons license here – Github Link

The software is an original development which has no relation to and shares no code with Radio Music. It is not open source. The Teensy in this kit comes pre-programmed with the software already loaded. We will sell pre-programmed Teensy’s separately if you accidentally destroy one, and will also provide firmware downloads to any verified existing customers who need to re-flash their Teensy.

These Soundcloud demos below are all untreated recordings direct from the modules. No external FX, processing, reverb, distortion or filtering has been added. This is what the modules sound like out of the box with trigger sequencing and external CV modulation. All drums are synthesised digitally, there are no samples!

Prok drum modules are a series of 4HP drum synthesis and morphing modules, consisting of a Bassdrum, Snare, Hi-Hat and Hand Clap. This module is the Hi-Hat.

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This partial kit includes:

• 1 x Black Aluminium HH Eurorack Panel (4HP)

• 1 x Prok PCB set

• 1 x Programmed Prok HH Teensy

• 1 x Illuminated Pushbutton

• 4 x Square LEDs

HH : Hi-Hat

Clicky sounds, metallic sounds. 6 square wave oscillators and a SID style noise generator are routed through a web of filters, envelopes and waveshapers. It can also make chords and drones or can be used as a weird noise source. Use the X and Y controls to find your sweet spot or create ever evolving drums by morphing between patches.

How Does It Work?

There are 4 banks of hi-hat style to choose from, which you can switch between by long pressing the button on the front panel. Each bank contains four corners or ‘QUADS’, which are made up of four patches. This means there are a total of 16 patches per bank.

1 Bank = 4 Quads = 16 Patches

But this doesn’t mean there are only 16 sounds. That would be boring. There is a morphing engine which allows you to continuously move between the sounds within one quad. This isn’t just 4 channels being mixed by volume. All the parameters of the synthesis engine are modulated in real time to create a continuously variable galaxy of sound. Each module comes with a full set of patches built into the firmware : just turn on the module, send in a trigger signal and you’re good to go.

The Front Panel

4 Red Squares

1. Show current morph position
2. When changing Quad will flash to show which quad is selected

X & Y Knobs

Control the morph position between the 4 patches in the current quad.

SD Card Slot

Allows you to store and load custom patches

To load custom patches from the SD card hold the button at boot.

Button

Retrigger the sound. Hold down to switch quads.

X & Y CV

The CV inputs only respond to positive signals from 0v to 5v.

For full range control from CV leave the knobs at the zero position.

CV inputs are scaled across the remaining range from the knobs.

For example if the X knob is halfway then the CV will control X from 0.5 to 1.0 using the full range of CV input.

Trigger Input

Trigger the sound on a rising edge.

Audio Output

Mono audio output.

The Back of the module

The back of the module has three connections:

• Ten pin standard Eurorack power header
• USB connection for connection to software editor (coming in 2019)
• 6 Pin header for expansion (more news in 2019)

Software Editor

Download the software editor HERE

Documentation

Prok Drums Build Document, BOM and Manual

Open Hardware

Prok Drums are open hardware, they are a modified version of the Music Thing Modular Radio Music module by Tom Whitwell and have the Creative Commons license CC-BY-SA: Attribution / ShareAlike. If you use any work from this hardware, you should credit Tom Whitwell, and you must republish any changes you make under the same license. The Prok Drums Eagle PCB projects are available under the creative commons license here – Github Link

The software is an original development which has no relation to and shares no code with Radio Music. It is not open source. The Teensy in this kit comes pre-programmed with the software already loaded. We will sell pre-programmed Teensy’s separately if you accidentally destroy one, and will also provide firmware downloads to any verified existing customers who need to re-flash their Teensy.

These Soundcloud demos below are all untreated recordings direct from the modules. No external FX, processing, reverb, distortion or filtering has been added. This is what the modules sound like out of the box with trigger sequencing and external CV modulation. All drums are synthesised digitally, there are no samples!

Prok drum modules are a series of 4HP drum synthesis and morphing modules, consisting of a Bassdrum, Snare, Hi-Hat and Hand Clap. This module is the Snare.

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This partial kit includes:

• 1 x Black Aluminium SN Eurorack Panel (4HP)

• 1 x Prok PCB set

• 1 x Programmed Prok SN Teensy

• 1 x Illuminated Pushbutton

• 4 x Square LEDs

SN : Snare Drum

Snappy stuff. Splashy things. Sounds a bit like the 808 and 909 but BETTER and does more than both combined. 2 oscillators and a specially crafted shift register based noise source. The 909 has one but this one is based on the famous SID chip. It also features variable sample rate so you can reach that sweet airy high noise as well as those low down digital dirty noise grains. Use the X and Y controls to find your sweet spot or create ever evolving drums by morphing between patches.

How Does It Work?

There are 4 banks of snare to choose from, which you can switch between by long pressing the button on the front panel. Each bank contains four corners or ‘QUADS’, which are made up of four patches. This means there are a total of 16 patches per bank.

1 Bank = 4 Quads = 16 Patches

But this doesn’t mean there are only 16 sounds. That would be boring. There is a morphing engine which allows you to continuously move between the sounds within one quad. This isn’t just 4 channels being mixed by volume. All the parameters of the synthesis engine are modulated in real time to create a continuously variable galaxy of sound. Each module comes with a full set of patches built into the firmware : just turn on the module, send in a trigger signal and you’re good to go.

The Front Panel

4 Red Squares

1. Show current morph position
2. When changing Quad will flash to show which quad is selected

X & Y Knobs

Control the morph position between the 4 patches in the current quad.

SD Card Slot

Allows you to store and load custom patches

To load custom patches from the SD card hold the button at boot.

Button

Retrigger the sound. Hold down to switch quads.

X & Y CV

The CV inputs only respond to positive signals from 0v to 5v.

For full range control from CV leave the knobs at the zero position.

CV inputs are scaled across the remaining range from the knobs.

For example if the X knob is halfway then the CV will control X from 0.5 to 1.0 using the full range of CV input.

Trigger Input

Trigger the sound on a rising edge.

Audio Output

Mono audio output.

The Back of the module

The back of the module has three connections:

• Ten pin standard Eurorack power header
• USB connection for connection to software editor (coming in 2019)
• 6 Pin header for expansion (more news in 2019)

Software Editor

Download the software editor HERE

Documentation

Prok Drums Build Document, BOM and Manual

Open Hardware

Prok Drums are open hardware, they are a modified version of the Music Thing Modular Radio Music module by Tom Whitwell and have the Creative Commons license CC-BY-SA: Attribution / ShareAlike. If you use any work from this hardware, you should credit Tom Whitwell, and you must republish any changes you make under the same license. The Prok Drums Eagle PCB projects are available under the creative commons license here – Github Link

The software is an original development which has no relation to and shares no code with Radio Music. It is not open source. The Teensy in this kit comes pre-programmed with the software already loaded. We will sell pre-programmed Teensy’s separately if you accidentally destroy one, and will also provide firmware downloads to any verified existing customers who need to re-flash their Teensy.

These Soundcloud demos below are all untreated recordings direct from the modules. No external FX, processing, reverb, distortion or filtering has been added. This is what the modules sound like out of the box with trigger sequencing and external CV modulation. All drums are synthesised digitally, there are no samples!

Prok drum modules are a series of 4HP drum synthesis and morphing modules, consisting of a Bassdrum, Snare, Hi-Hat and Hand Clap. This module is the Bassdrum.

This partial kit includes:

• 1 x Black Aluminium BD Eurorack Panel (4HP)

• 1 x Prok PCB set

• 1 x Programmed Prok BD Teensy

• 1 x Illuminated Pushbutton

• 4 x Square LEDs

BD : Bassdrum

The Bassdrum synthesis engine can take you anywhere from the simple 808 / 909 one oscillator bassdrum sound, to screaming hardcore kicks that combinine four oscillators, two waveshapers and a noise source. You want solid, it does solid. You want banging distorted harmonics you get them too. Use the X and Y controls to find your sweet spot or create ever evolving drums by morphing between patches.

How Does It Work?

There are 4 banks of bassdrum to choose from, which you can switch between by long pressing the button on the front panel. Each bank contains four corners or ‘QUADS’, which are made up of four patches. This means there are a total of 16 patches per bank.

1 Bank = 4 Quads = 16 Patches

But this doesn’t mean there are only 16 sounds. That would be boring. There is a morphing engine which allows you to continuously move between the sounds within one quad. This isn’t just 4 channels being mixed by volume. All the parameters of the synthesis engine are modulated in real time to create a continuously variable galaxy of sound. Each module comes with a full set of patches built into the firmware : just turn on the module, send in a trigger signal and you’re good to go.

The Front Panel

4 Red Squares

1. Show current morph position
2. When changing Quad will flash to show which quad is selected

X & Y Knobs

Control the morph position between the 4 patches in the current quad.

SD Card Slot

Allows you to store and load custom patches

To load custom patches from the SD card hold the button at boot.

Button

Retrigger the sound. Hold down to switch quads.

X & Y CV

The CV inputs only respond to positive signals from 0v to 5v.

For full range control from CV leave the knobs at the zero position.

CV inputs are scaled across the remaining range from the knobs.

For example if the X knob is halfway then the CV will control X from 0.5 to 1.0 using the full range of CV input.

Trigger Input

Trigger the sound on a rising edge.

Audio Output

Mono audio output.

The Back of the module

The back of the module has three connections:

• Ten pin standard Eurorack power header
• USB connection for connection to software editor (coming in 2019)
• 6 Pin header for expansion (more news in 2019)

Software Editor

Download the software editor HERE

Documentation

Prok Drums Build Document, BOM and Manual

Open Hardware

Prok Drums are open hardware, they are a modified version of the Music Thing Modular Radio Music module by Tom Whitwell and have the Creative Commons license CC-BY-SA: Attribution / ShareAlike. If you use any work from this hardware, you should credit Tom Whitwell, and you must republish any changes you make under the same license. The Prok Drums Eagle PCB projects are available under the creative commons license here – Github Link

The software is an original development which has no relation to and shares no code with Radio Music. It is not open source. The Teensy in this kit comes pre-programmed with the software already loaded. We will sell pre-programmed Teensy’s separately if you accidentally destroy one, and will also provide firmware downloads to any verified existing customers who need to re-flash their Teensy.

TICKETS MUST BE PURCHASED IN ADVANCE

This kit is aimed at beginner level. The majority of components are already soldered so this is a great way to get into DIY. If you’ve done a little or no soldering before and feel you want guidance and support through a build then this workshop is just for you. You will be guided through all the soldering work with lots of support and take the working and completed module home!

The workshop is at Thonk HQ in Brighton on Saturday December 14th 2019, please arrive 15 minutes before your chosen slot. Thonk is an inclusive and gender positive environment. The workspace is wheelchair accessible with accessible toilets. If you have any special needs or access requirements of any kind please do let us know in advance and we will try our very best to accommodate you. We welcome anyone over the age of 11 to attend, anyone under the age of 16 must be accompanied by a parent or guardian. Please bring I.D. if you are under 18 and unaccompanied.

The Thonk office is only an 8 minute walk from Brighton train station, we’ll send you more details once your order is placed. We provide everything you need, kits, tools and tuition.

Free hot drinks provided.

Dual Filter Overdrive

The Ar Merc’het Brao module is comprised of two filters and two overdrives.
As usual at Touellskouarn it has a Breton name.

• 2 X Resonant 12 dB slope Filter (High Pass/Low Pass)
• 2 X Classic Overdrives
• Filter Cutoff CV inputs
• Global controls for Cutoff and Resonance
• Stereo and double mono use
• Modular and Guitar friendly
• Anodized & serigraphied 2mm aluminium panel

Details

It can be used with a stereo signal or with two mono signals. The module is modular as well as guitar friendly.
The filters are resonant with a slope of -12dB. A switch allows to switch each filter from LowPass to HighPass. The filter cutoffs are voltage controlled thanks to dedicated CV inputs. Additionnaly the Ar Merc’het Brao features global controls for cutoff and resonance.

Both overdrive sections offer the classic and well known TouellSkouarn distortion sound.

Technical

Size – 16HP

Material – 2mm Aluminium

+12V – 20mA

-12V – 20mA

The M.M. VCA is a 6HP Eurorack VCA module based on the classic design by Dr. Robert Moog as used in his first portable synthesiser. The discreet design of the circuit has inherent soft clipping characteristics when driven, which either add harmonics to a pure sine wave or conversely remove higher order harmonics when amplifying waves such as a Saw or Triangle. This has the effect of slightly boosting the fundamental frequency, making sounds that are fatter and warmer than standard VCAs.

The M.M. VCA has two inputs with level controls – both inputs are then routed through two VCAs in series (PRE-AMP and MAIN AMP). This allows for modulation of the first VCA (PRE-AMP) with an LFO and the second (MAIN AMP) with an Envelope Generator.

An offset control provides a DC control voltage to the first VCA that can be used to bias the modulation so it doesn’t cut off when the LFO is in the negative part of its cycle. This control should be set to full if modulation of the first VCA is not being utilised.

Build Document & BOM – Assembly Guide

This Panel / Set includes:

• 1 x MMVCA 6HP Eurorack Panel
• 1 x MMVCA PCB Set
• 2 x Light Pipes
• 2 x BC550 Matched Transistor pairs
• 1 x BC560 Matched Transistor pair

Features

• 2 x Audio Input Level Controls  – Starts soft clipping after approximately 50%.
• CV 1 (PRE-AMP) Level – Adjusts the amount of CV to VCA 1.
• CV 2 (MAIN AMP) Level – Adjusts the amount of CV to VCA 2 (Normalled to 10V).
• CV 1 OFFSET Amount – Adjusts the amount of DC bias control voltage to VCA 1.

Ins / Outs

• Audio Inputs x 2
• CV 1
• CV 2
• Audio Output

The Timbre is 6HP Eurorack module based on the wavefolder section of the Buchla 259 oscillator as implemented in the Music Easel. The wavefolder adds extra harmonics to input signals that have low harmonic content to creating rich and interesting timbres. Typical input sources to use would be Sine and Triangle waves but you are welcome to try other sources as well! The Dannysound Timbre adds an extra input to the Buchla design  to allow 2 oscillators to drive the wavefolder simultaneously – this dramatically increases the range of possible tones that can be generated and allows the folder to go wild!

Build Document & BOM – Assembly Guide

This Panel / Set includes:

• 1 x Timbre 6HP Eurorack Panel
• 1 x Timbre PCB Set
• 2 x Light Pipes

Features

• Osc1 / Osc2 Mix – Adjusts mix between oscillator 1 and 2 inputs, also acts as an attenuator if only one of the inputs is used.
• Timbre Control – Adjusts the overall wavefold amount.
• Timbre CV – Bipolar (attenuverter) controls the Timbre CV input.
• Symmetry – Adds an offset to the input so the top half of the wave starts folding earlier.
• Blend – Mixes between the clean and effected sound.

Ins / Outs

• Osc 1 Input
• Osc 2 Input
• Timbre CV Input
• Symmetry CV Input
• Blend CV Input
• Audio Output

The Music Thing Modular Workshop Notebook is a 100 page ring-bound A5 notebook made for designing electronics, in particular Eurorack synth modules.

The book includes:

• 40 pages of dotted notepad paper. The dots are on the 100mil / 2.54mm grid used by most thru-hole electronic components. It’s easy to sketch actual-size layouts, but also works fine drawing schematics, logos, comic strips or lists of ideas.

• 40 pages of blank Eurorack panel layouts, from 2hp to 34hp. There are 145 blank panels in total, including 1U Intellijel and PulpLogic tiles.

• 10 pages of rational troubleshooting worksheets, with advice, tips and a structured method for calm troubleshooting when something doesn’t work first time.

• The inside book covers contain at-a-glance data and information; pinouts for common chips and sockets, musical frequency tables, standard op-amp configurations.

• There are also lists of recommended reading, sources of ideas and records to listen to while soldering…

The book is printed on nice thick Sharpie-proof paper, and all the pages are numbered for easy cross-referencing as you build a project across the sections.

Please post pictures of your notebook in use on Instagram under the #musicthingmodular tag, and send corrections or suggestions for a future edition to tom[at]musicthing.co.uk

The Plague Bearer is called a filter, but that is just a description of the circuit topology, what it can actually do goes way beyond that. It has been described as a filter, a waveshaper, a mangler, a crusher, and – my favorite – as an “FSU module”. I think calling it a filter may be a bit misleading, but I have no idea what else to call it. It is a filter, but it does more (all at the same time, really) excessive phase shifting, waveforming, ringing, formant generation, and so on. I guess it could be called a waveform modifier or enhancer, but those don’t sound good either. I named it the Plague Bearer for a reason.

If you are looking for technical synthophile specs you are out of luck here. All f(h) devices are designed in accordance with how they sound, not to achieve mathematical perfection. The most common question I receive is, “what is the filter slope?” Honestly, I never measured that. I specifically avoided the conventional approach while I was designing this circuit, so it’s very problematic to try to describe this filter in the normal terms. The slope is directly tied to the gain of the circuit, making it variable, and the Q is affected by all three filter controls. The setup is actually a combined High- and Low-pass. The corner frequencies are adjusted by the controls and can be overlapped completely, which gives a comb-filtering effect.
The rest is for you to discover.

Note: This kit features mainly SMD components.

Changes in Rev 4:
Most changes for this revision were for ease of assembly purposes, but two new features were added:
1. Input Attenuator: Earlier versions often required use of an external VCA to reduce input signal levels and prevent overdriving the input. This is now handled by the input attenuator.
2. Output limiting: The output levels of earlier versions could spike well beyond ±5Vp-p, so an output limiter was added. The limiter has a soft to medium curve and can be disabled by moving the two jumpers as shown on the PCB.

Plague Bearer – Build Document and User Guide

Technical Specifications:

• Supply Voltage (min –> max) ±9V –> ±15V
• Supply Current (max draw @ ±12V) +12V: 6.5mA –12V: 4.0mA
• Input Voltage (@ ±12V) 0Vpp —> 10Vpp
• Output Voltage ±5V
• Input & Ouput (I/O) coupling Capacitive (AC)
• Output Impedance 2.2µF in series with 1kΩ
• Control Voltage (CV) inputs 0V –> V+
• Offset range ±5V
• CV input coupling Direct (DC)
• CV input impedance 100kΩ

 

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The Zlob Modular Diode Chaos is a 3HP analog chaotic low frequency voltage generator. It’s a uniquely designed module that has never existed as an electronic music instrument until now. The module design is based on a circuit from a paper called “A simple chaotic circuit with a light-emitting diode” written by Volos, Wang, Jafari, and Kapitaniak.

Diode Chaos produces 3 phases of interrelated morphing voltages including a chaotic trigger out. The range is around 30 seconds a cycle up to audio rate. The frequency is controlled by the RATE knob. Each output exhibits different behaviour at different rate settings. X,Y, and Z outs like to stay in the 4vpp range although at different RATE settings the outs can reach 10vpp. The TRIG out chaotically releases 0-10v triggers although sometimes it will spit out smaller voltage peaks.

LED soldermask windows provide constant display of positive and negative voltage crossings.

Diode Chaos – Assembly Guide

Specifications

• Width: 3HP
• Panel Material: Aluminum
• Current Consumption: +12v: 10mA, -12v: 10mA
• Ships with M3 black nylon screws

 

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The AModulator is an RF signal generator kit designed to be a companion to the popular RF Nomad voltage-controlled shortwave receiver Eurorack module. The AModulator SDIY kit consists of two printed circuit boards and thru hole components required to complete the kit. One circuit board contains the actual electronics of the module, and the other circuit board serves as both the faceplate of the module as well as a touch-plate antenna. The AModulator is a very simple RF oscillator that employs amplitude modulation to vary the amplitude, or “volume” of a radio-frequency signal. The amount of amplitude modulation is directly controlled by the amplitude of an audio signal that is input through a front-panel jack on the AModulator. In short, the AModulator puts those classic squelchy, squealy, hissy sounds of a shortwave radio into your modular, via reception on an RF Nomad! Use your own audio program source to create material to mangle with your RF Nomad.

Using the AModulator

Using the AModulator is simple: Switch on the AModulator, send an audio signal into the Audio Input jack, and tune it in on your RF Nomad. Note that the AModulator is intentionally a very low power output transmitter, so you may have to adjust your RF Nomad’s antenna and RF Gain to be able to pick up the audio program cleanly. This is on purpose for a few reasons:

1. This allows you to “Play” the AModulator; varying the antenna position of the Nomad can be used to fade the signal in and out, giving it that vintage shortwave vibe. Notice also that the front panel of the AModulator has a touch-plate “Antenna”. Try touching it in diferent ways, to cause more or less signal to be picked up in your RF Nomad.
2. While the FCC5 allows individuals to construct experimental low power transmitters for personal educational use, it is up to that individual to make sure that no harmful interference is generated. The AModulator’s signal output level is so small as to barely be measurable, while still yielding useful results.
3. If the signal quality were perfect, you could have just used a patch cord to send the audio signal instead!

Patch Ideas

Although the simplest patch is to run audio from something like an MP3 player or another Eurorack module into the audio jack, and use the RF Nomad to mangle that audio, there are some other interesting possibilities to explore. Try patching the audio output of the RF Nomad into a mult, and run a copy of the RF Nomad’s audio output signal into the audio input jack on the AModulator. Now you’ve got a feedback loop that has an RF component to it that you can “play” with the touchplate! Weirder still, patch another copy of that signal in to the CV Input jack on the RF Nomad! Crazy feedback fun!

Build Document – Assembly Guide

Punch is the ultimate VCA-DECAY module for Eurorack – specially designed to generate dynamic percussive sounds but also capable of basslines, leads, envelopes and more. The VCA has a built in voltage controlled Decay envelope that can be turned from smooth to more aggressive logarithmic responses and can be activated with triggers, gates or cv’s. Punch also features accent inputs on each channel, for more interesting and dynamic sounds and envelopes. Each envelope can also be inverted via dedicated switches on the front panel. If you use an inverted envelope alongside the accent input you can create ducking effects like side-chain compression. V3 of Punch adds a switch per channel to change the Accent mode between either “vintage style drum trigger machine” or “complex CV with velocity VCA-decay”.

Features:

• Dual VCA with voltage controlled Decay.
• Adjustable Decay curve
• Snappy attack ideal for percussion
• Accent inputs
• Envelope shape invert switches
• Width: 9HP
• Skiff friendly
• Power consumption: 52mA@+12V, 50mA@-12V

Note: all SMD components are now pre-soldered – only through hole soldering to do!

Punch Build Document | Punch Manual

The Sticky is a passive bus board designed to distribute Eurorack power. The Sticky is able to fit into some tight spaces measuring only 160mm x 30mm x 12mm and features 10 connectors. Its the perfect companion for the GO! USB C supply, or any other Eurorack Power.

Features:

• 10 x 16-way shrouded headers
• Non-conductive rear side for short circuit free installation
• Actual red stripe!
• Really sticky adhesive pads

What you get

One Sticky and three adhesive pads.

Installation

Prepare the surface by ensuring its clean and dry. Attempt a dry fit before attaching the adhesive pads and make sure its not in the way of your modules. Peel and attatch the pads to your Sticky and when completely happy, press into position for a few seconds.