MIDI thing is a compact 4 channel Midi to CV/Gate interface. Featuring 12 bit converters that allow v/oct control with around 1 cent precision.

Four different modes available:

• Mono: One MIDI channel -> Pitch, velocity, bend, modulation and gate.
• Duo: Two MIDI Channels -> Pitch, velocity and gate + pitch, velocity and gate
• Multi: Four MIDI Channels -> Pitch, gate
• Drum:  Eight trigger output.

All modes have Clock and ST/SP outputs.

Specs

• Current needs: +12V: 16mA -12V: 8mA +5V: 16mA
• Banana or minijack connectors available.
• 6 HP / 30 mm depth (inc power connector)

Downloads

User Manual
Assembly Instructions.

Dual four-quadrant multiplier with VC Offset.
This unit does an analog multiplication of two signal (A and B) and add an offset (C).

It can act as a dual voltage controlled attenvuerter, dual ring modulator, dual VCA or four channel mixer.

Signal B has a attenuverter that will multiply by -2 to 2 while Offset has a -1 to 1 attenuverter (unity gain).
B and C inputs are normalled to 5v and 10v so A input can be processed just using the potentiometers.

The output of first block is normalized to second one so second output can act as master, to get (A1*B1+C1) + (A2*B2+C2)

Second version of  our Crush delay. An echo-delay unit based on PT2399 that specializes in generating digital garbage and noise!

This unit has been improved greatly from first version and signal routing has been changed to improve performance possibilities.

Crush Delay v2 has two VCAs that will control the amount of signal that is sent to the delay. First input routed to dry/wet and delay and second one directly to delay. With this second input and Send output we can do external feedback routings (See block diagram below)

The biggest improvement has been made to the control of PT2399 itself, applying circuit bending techniques. It has an improved and extended speed control, getting a wider range on Crush area as well as a smoother control, converting this unit into a VC digital garbage generator!

It includes three gate controlled switches that enables three bends to the chip, providing an even greater variety of digital noise, glitches and nasty mayhem!

Of course, crush Delay v2 can be used as an echo-delay unit with around 400 ms clean delay time. and up to 2 seconds of dirty delay.

Features VC feedback with an automatic gain control to keep levels stable at any feedback level.

A full kit to build a compact, easy to use, easy to build and great sounding distortion module which also works as a VCA, giving an LPG style of character to the sound.

RYO kits are very user friendly with detailed build manuals and individually bagged and labelled components.

The Optodist is based on two Advanced Photonix (formerly known as Silonex) optocouplers that gives its characterful overdriven sound and plucky dynamic response to CV, it is equally at home adding a bit of extra crisp to highs and mids or warming up your lows as it is turning a resonant filter into a howling beast or your drums into crushing carnage. The Optodist comes supplied with the SR3 optocoupler. The SR3 gives a tight, snappy CV response.

Please note that due to the nature of the vactrol-style optocouplers, response behaviour may vary between different factory batches.

Also on board is an LED based limiter circuit which limits the signal thru a set of 4 LEDs which can be seen on the panel, for adding a different flavour to your distortion.

The Optodist Kit is a novice-friendly project, it is a low part count, single-PCB build that only requires the most basic experience in PCB soldering and module assembly. Kits comes supplied with PCB, front panel (PCB material), component kit, knobs, power cable and mounting screws. Solder and tools are not supplied.

Width: 6hp

Depth with power cable attached: Less than 35 mm.

Power: +/- 15 mA

Build Manual

Muffwiggler Build Thread for tech support.

Simple EQ –  Learn SMD soldering by building two channels of the kind of tone controls you’d find on an old hifi. No voltage control, but just enough range to push sounds into distortion. Works well in a feedback loop.

Size: 4hp

Power draw: 15ma on +12v, 15ma on -12v

SMD soldering is not recommended for complete beginners! Make sure your soldering iron has a good fine tip before attempting this build. A flux pen is also recommended.

Build docs, BOM etc – https://thonk.co.uk/documents/simple-eq-kit/

• Gildan Premium Cotton Ring Spun T-Shirt
• Screenprinted on front.
• Printed in Wales, UK
• Custom Thonk nape print
• Custom Thonk sleeve tag
• Fabric 100% ring-spun Cotton pre-shrunk jersey knit
• Weight 185g/m² (180g/m² White)
• 2,2cm collar
• Taped neck and shoulders
• Twin needle sleeve and bottom hems
• Quarter-turned to eliminate centre crease

Refunds and returns on clothing products are only available within the UK – Clothing must be returned within 2 weeks of purchase – Clothing must be returned unopened unless there is a discrepancy in the label size and actual size. See Terms & Conditions for returns process.

 for a Eurorack passive triple attenuator module (4hp).

A very simple and very useful Eurorack DIY kit. Below you’ll find links to very thorough build instructions written with synth DIY beginners in mind. This module requires no power from your busboard or prior electronic knowledge, it’s completely passive.

Each of the three attenuators can be set to either a linear or logarithmic response with a jumper on the back of the PCB. Linear is more user friendly for CV attenuation, Log for audio signal attenuation.

Build time: 20-60 mins depending on experience.

Everything is included to make and rack the pictured module, even the solder. You just need a soldering iron and a pair of side cutters to finish the build.

• Panel – 4hp – Anodised Aluminium with industrial Alu-Print legend
• Knobs – Davies 1900h clones
• Alpha 9mm pots
• Thonkiconn jacks
• Solder (a generous amounts for beginners)

Build Documentation

https://thonk.co.uk/documents/at-at-at/

This project has surface mount electronics (SMD)

No Parts are provided.

The Bufftest is an extremely accurate buffered mult with a clever little circuit that lets you turn it into a cable tester at the push of a button. It can also be patched as 3x manual gates and, if you can find a use for it, 3x negative gates. Bi-colour LEDs indicate voltage.

To use as a cable tester, patch cable to be tested from any of the top outputs to the bottom input. When the test button is pressed the top LED will light green to indicate a positive voltage output, the bottom LED will indicate the state of the cable being tested. Green indicates the signal is good, red indicates the signal is broken and off indicates signal and ground are shorted.

Following user feedback from the LRMSMSLR the BuffTest has a footprint for a shrouded power header. Reverse power protection is provided by a pair of diodes.

Front panel is PCB material with black soldermask and ENIG gold lettering. Secondary labelling is printed in the copper under the soldermask so it looks embossed. Also lightning bolts.

• 13 mA +12V
• 13 mA -12V
• 0 mA 5V
• 25 mm Depth
• Ø 5.00 (1 Votes) Average Rating

Schematic, BOM and discussion of the design:

https://www.muffwiggler.com/forum/viewtopic.php?t=158717

The WORNG 3×3 Passive Mult does what it says on the box. A 3×3 mult for anything that doesn’t need the accuracy of a buffered mult. The fourth and seventh jacks are normalled to the mult above, so by leaving them unpatched you can have a 1×7 mult or a 1×3 and 1×5, as your mult needs change.

Why 3hp? Yes you can squeeze a mult into 2hp but using it or any module placed next to it can feel cramped, 3hp gives you a little bit of extra room if you don’t have tiny hands. Worried about having an odd hp gap in your case? They’re so cheap you can buy two!

All you need to build the 3×3 Passive Mult is this set, 9x PJ301M-12 (Thonkiconn) jack sockets, a soldering iron and some solder. It’s that easy.

http://worngelectronics.bigcartel.com/product/3×3-passive-mult-pcb-panel

• Module does not draw current
• 10 mm Depth

This is a full DIY which includes everything you need to build the Phoreo. There isn’t a full build doc but we do provide excellent high res photographs and it’s a very simple build. Note the Phoreo requires a 5V power rail in your Eurorack case.

Φορέω is a triple function processor for triggers, gates and clocks. It simultaneously performs pulse width modulation, multiplication and repetition, with individual input, output and CV for each function.

• Pulse width modulation, as a ratio of the input signal rate, is adjustable from 0 to 100 percent.
• Multiplication also operates on the input signal rate, multiplying it by a factor from 1 to 16.
• Repetition generates a burst of triggers, at the rate of the multiplier, with repetitions adjustable from 1 to 16.

Each function has two knobs for manual and CV level, and three jacks for trigger input, CV input and trigger output.

Pulse width modulation carries through to the outputs of the two other functions, and the three trigger inputs are normalled from top to bottom.

When multiply and repeat are combined, Φορέω makes an excellent burst generator, perfect for rolls, flams and fills. The repeater gives precise control over burst length, while the multiplier easily moves from quarter notes, to thirds, to eights, to everything in between and lots more beyond. Go on, give us a snare rush!

Φορέω is also extremely versatile with many utility functions, such as master clock doubling, clock modulation, and for triggering and clocking fast sequences. It even works as a square wave overtone generator with PWM, tracking audio input signals up to 20kHz.

Φορέω perfectly complements Στοιχεῖα, Λόγοι, Κλάσματα and Χρόνος, completing our Euclidean series of trigger processors.

BULK PRICES – Customers inside the European Union also pay VAT at 20% on the prices below.

You can see the final cost of the volume breaks by adding the parts to your cart.

THONKICONN

Thonkiconn Jack Datasheet

Thonkiconn Eagle v6 Library Part – thonkiconn.lbr

Thonkiconn Eagle v5.7+ Library Part – thonkiconn_eagle_v5.lbr

Thonkiconn (PJ301M-12) is a new vertical mount 3.5mm switching mono phone jack.

The mechanism is identical to the ‘Erthenvar’ jack type (PJ301BM), it’s primary purpose is as a direct replacement of the popular Kobiconn 3.5mm jack but with a 100% vertically integrated footprint, i.e. no perpendicular ground pin. A really great bonus of these parts is they fit neatly into breadboard/stripboard/veroboard.

All materials used are RoHS compliant.

NOTE: Please refer to the notes about the PCB HOLE in the Thonkiconn Jack Datasheet.
It is advisable to drill a 3mm hole in the PCB directly under the jack barrel centre or avoid routing traces or ground plane in that area.

 PJ301BM

Known commonly as ‘Flight of Harmony’ or ‘Erthenvar’ jacks, this popular component is a vertical mount 3.5mm switching phone jack with a threaded metal bushing.

This is the latest version of the part, redeveloped by the manufacturer in November 2012 to provide very reliable switch contacting.

Material:PBT housing, beryllium copper spring, brass curve piece.

• Temperature Range: -30 deg c~70 deg c?
• Rated Current:0.5A
• Contact Resistance:0.03 Ohm
• Rated Voltage:30V AC/DC
• Test Voltage:500V/60s
• Insulation Resistance: 100MOhm
• Insertion Force:5-20N
• Withdrawal Force:4-20N

PJ302M

The PJ302M is a  horizontal or right angled mount 3.5mm switching mono phone jack.

It can simply be converted to a non switching jack as shown below. Various euro modules use these jacks, including the 4ms RCD and SCM modules.

All materials used are RoHS compliant.

BULK DISCOUNTS

Discounts are calculated on any combinations of type and value.
Add pots to the cart to see the actual cost for buying in bulk. Email for larger volumes.

Shaft Diameter – 6.35mm (0.25″)

Shaft Length – 15mm (0.59″)

These are the pots that are included with 95% of all Thonk produced kits and specced by many manufacturers. These pots work great with all the 6.35mm round shaft knobs we sell.

These pots are perfect for Music Thing Modular, Synthrotek, RYO, Manhattan Analog, Fonitronik, Frequency Central (FCUK) & HexInverter projects where 9mm pots are specced… but do double check as there are a few exceptions. They are not the first choice for panel-wiring… but we do have Pot Chicklets coming soon to redress that balance!

We love these pots, they feel smooth and precise and have got a strong following for a good reason. One thing that always annoyed us was that annoying little anti-rotation tag that you have to cut or break off, so unlike other distributors we got them manufactured without that tag. Also removing the nut and washer on each pot to build something like a 64 pot sequencer panel can get REALLY tedious, so again unlike other distributors we include the nut and washer bagged separately. It only save 20 seconds per pot maybe, but it adds up!

FULL DATASHEETS – http://www.thonk.co.uk/documents/alpha/9mm/

BULK DISCOUNT

| 10+  – 5% | 25+  – 7% | 100+  – 10% | 500+ – 20% |

(Bulk prices are calculated once items are added to your cart)

Pair with the new MXR knob in the same colour range

New Black 1900h types

• Black No Line – No white line on the top. Encoder style for ‘endless’ rotary pots on digital modules.
• Black (T18) – For 18 teeth knurled shafts such as Doepfer, Elby etc. These are pure plastic, not brass inserted.
• Black (D) – For Make Noise, Intellijel, 4ms and many more. These are pure plastic, not brass inserted. Double check your modules actual knob orientation details before purchasing.

The Black (D) part has been specially manufactured to fit correctly on new style Make Noise modules. The Rogan knobs on Make Noise modules have a round hole for around 7mm of the knob shaft before it turns to a D shaft. This means that other manufacturers D shaft 1900h clones will sit no closer than 7mm off the surface of a Make Noise panel. Note the pointer orientation on these means they are not suitable for all D-Shaft pots, see diagram below, the pointer is on the curved side of the D.

• No Minimum order
• High quality brass insert with set screw (on all types except Black D-Shaft and T18 Shaft)
• 6.4mm Shaft size
• ABS plastic moulding

THIS IS A FULL DIY KIT

It contains all components required for a complete build, right down to rack screws and power cable. We selected and used the high quality parts as specced by Random*Source. Random Source have created a step by step build doc for this project

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

SERGE VARIABLE RESONANCE FILTER (VCFQ)

The Serge Extended Variable Resonance filter (VCFQ) is probably the most famous filter of the Serge system and one of the essential Serge modules. It is an excellent, extremely versatile general-purpose VCF that provides simultaneous low-pass, high-pass, band-pass and notch (band-reject) outputs combined with unique flexibility. Its trigger in, LOW mode and self osciallation allow a variety of uses from Oscillator to VC processing.

Now – for the first time ever and licenced by Serge – the VCFQ is available as DIY kit for Euro.

Build documentation: Serge VCFQ BOM / Build doc

Thonk Kit Build Notes: Here

Some details of the Random*Source Serge VCFQ module kit:

• Under licence from Serge Tcherepnin
• Designed for High-end VCAs (THAT2180)
• No matching of transistors required
• No wiring needed
• Eurorack format (3U), 14 hp
• Power consumption: 52mA @ +12V, 52mA @ -12V
• Module depth: < 40mm (1.5″)

THIS IS A FULL DIY KIT

It contains all components required for a complete build, right down to rack screws and power cable. We selected and used the high quality parts as specced by Random*Source.

Most of the components are already soldered! The back board is already fully populated and soldered with SMD components, this is therefore a very quick build that mainly requires soldering of pots, jacks, trimmers, LEDs and headers.

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

THIS IS A FULL DIY KIT

It contains all components required for a complete build, right down to rack screws and power cable. We selected and used the high quality parts as specced by Random*Source.

Most of the components are already soldered! The back board is already fully populated and soldered with SMD components, this is therefore a very quick build that mainly requires soldering of pots, jacks, trimmers, LEDs and headers.

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

THIS IS A FULL DIY KIT

It contains all components required for a complete build, right down to rack screws and power cable. We selected and used the parts as specced by Random*Source. Random Source have created a step by step build doc for this project

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

Penta

The RYO Penta is a compact 4hp sequencer for eurorack that’s easy to build and low cost, without compromising on our usual quality standards such as buffered output, schmitt triggers on inputs and reverse polarity protection.

It is great for simpler sequencer tasks such as basslines and arpeggios, transposing sequences, gates for envelopes/slews/drums, filter cutoff or anything where a repeating stepped modulation is wanted for adding movement to the sounds you’re making.

Sending a clock to the CLK input will progress the sequence, the Penta has 5 minishaft potentiometers for adjusting each of the 5 steps voltages, ranging from 0 to +5V. A pattern length switch is available for selecting 3, 4 or 5 steps pattern length, this can of course also be set by using an external gate or trig into the RST (Reset) input.

We’ve also added a bonus for the more seasoned builders in the form of +5V GATE output solder pads for each of the sequencers 5 steps, as well as an input pad for HOLD which will lock the sequence to the active step as long as a gate is present. Info on how to perform a homebrew expansion can be found on the last page in the assembly manual.

Download assembly manual here. (2.1MB)

Download schematics here.

Basic specifications

Width: 4hp

Depth with power cable attached: 39 mm.

Power: +6 mA / -1 mA

PATHS – A Cycling Sequential Switch

A 4:4 cycling sequential switch, featuring simultaneous forward/reverse stepping, hold, reset, and an additional voltage controlled mode based on the same design as our VC Sequencer. Also on board are push buttons for each function enabling you to play and perform the switching with a more human input.

This sequential switch will do all your standard 1>2, 1>3, 1>4 or the other way around with great real-time as well as external voltage controllability.

But its when you start playing around with multiple sources and destinations that things start getting fun and weird! You could for instance shuffle around four different trigger patterns to trigger four different percussive generators for interesting variations, or why not 4 oscillators shuffling between 4 different destinations, panned and processed in various ways?

Whatever your sequential switch application might be, we’re confident the Paths is up to the task!

Just like the VC Sequencer it is clockable by very high clock rates and CVable with full audio range. All for your experimental waveshaping duties.

In CV mode there is two CV inputs. The one that shares the reverse clock input is full wave rectified and the one that shares the forward clock input is half wave rectified. It uses an active rectifier without voltage drop or a dead zone around 0V. The steps toggle switch and the red buttons are inactive in CV mode.

When I/O1 is connected to O/I1, I/O2 is connected to O/I2 and so on.

When I/O1 is connected to O/I2, I/O2 is connected to O/I3 and so on, and I/O4 is connected to O/I1.

When I/O1 is connected to O/I3, I/O2 is connected to O/I4 and I/O3 is connected to O/I1 and so on.

All the routings can be seen in the picture linked here.

Kits comes supplied with PCBs, front panel (PCB material), component kit, power cable and mounting screws. Solder and tools are not supplied.

Recommended Retail Price in SEK excl. VAT/sales tax.

SEK 999 for the DIY kit (Convert to EUR, USD, GBP)

Price for PCB*/Panel only and assembled TBA.

Download assembly instructions and BOM here (2.7MB).

Download schematics here.

Basic specifications

Width: 8 hp

Depth: 46 mm.

Power: +12V 30 mA / -12V 8 mA

A full kit to build a compact, easy to use, easy to build and great sounding distortion module which also works as a VCA, giving an LPG style of character to the sound.

RYO kits are very user friendly with detailed build manuals and individually bagged and labelled components.

The Optodist is based on two Advanced Photonix (formerly known as Silonex) optocouplers that gives its characterful overdriven sound and plucky dynamic response to CV, it is equally at home adding a bit of extra crisp to highs and mids or warming up your lows as it is turning a resonant filter into a howling beast or your drums into crushing carnage. The Optodist comes supplied with the SR3 optocoupler. The SR3 gives a tight, snappy CV response.

Please note that due to the nature of the vactrol-style optocouplers, response behaviour may vary between different factory batches.

Also on board is an LED based limiter circuit which limits the signal thru a set of 4 LEDs which can be seen on the panel, for adding a different flavour to your distortion.

The Optodist Kit is a novice-friendly project, it is a low part count, single-PCB build that only requires the most basic experience in PCB soldering and module assembly. Kits comes supplied with PCB, front panel (PCB material), component kit, knobs, power cable and mounting screws. Solder and tools are not supplied.

Width: 6hp

Depth with power cable attached: Less than 35 mm.

Power: +/- 15 mA

Build Manual

Muffwiggler Build Thread for tech support.