Modulation & Random lfot / touch control lfo / 3 HP ⇣ Low Frequency Oscillator featuring an extensive frequency range and a tactile touch control capability. 1/3 key features LFO with 3 Waveforms Sine, Square and Pulse waves LFO FREQUENCY potentiometer LFO RANGE switch Adjustable Pulse width Two touch plates to play the LFO HOLD function PUSH function Wrong polarity protection Skiff friendly specs & downloads width: 3 HP depth: 28 mm power: 49 mA @ +12V / 47 mA @ -12V documentation videos description / manual The LFO provides three voltages in shape of Sine, Square and Pulse waves. It can be used as a control voltage, clock source or patched into the audio path for drum synthesis. The frequency and the frequency range can be controlled by turning the frequency knob and rate switch. Additionally the width of the pulse wave may be manually adjusted. An LED indicates the current speed of the LFO. On the bottom of the panel you will find two touch plates. Using these you can “play” the LFO and become a part of the circuit. By pressing your finger onto the HOLD plate you will be able to stop and reset the LFO cycle. It will start over again when the finger is released. The second touch plate PUSH is altering the frequency of the oscillator. Roll your finger from the top side of the plate to the bottom and the rate will be increasingly speeded up. Or directly press you finger an all plate parts and go crazy! After releasing your finger from the PUSH plate the frequency will smoothly recover to its original speed set by the frequency knob. prev Up next

Oscillator drum / digital drum module / 3 HP ⇣ DRUM is an excerpt of the Mutable Instruments PEAKS module. It was reduced to the max and only focuses on the 808 and FM Drum algorithms. 1/3 key features Digital Drum Module Two Modes: 808 & FM Manual and CV Trigger HP friendly Flip Panel with Descriptions for each Mode Based on the MI Peaks Algorithms Wrong Polarity Protection specs & downloads width: 3 HP depth: 65 mm power: 60 mA @ +12V / 2 mA @ -12V documentation videos description / manual There are two modes to be selected via a push button on the PCB: 808 DrumThis is an emulation of the well-known 808 kick drum. You have manual control over the FREQUENCY, PITCH ENVELOPE, TRANSIENT and DECAY. FM DrumThis is a digital drum synth based on FM synthesis. By turning the knobs you can change the FREQUENCY, FM AMOUNT, DECAY and COLOR of the drum sound. DRUM has an internal EQ that allows you to adjust the amount of bass applied to the signal using a trimmer on the PCB. This module also has a flip panel with descriptions per mode on each side. Both modes share a manual TRIG button to execute the drum sound, a TRIGGER INPUT and a signal OUTPUT. Released under cc-by-sa-3.0 license: Pichenettes Mutable Instruments prev Up next

Oscillator pyxis / adaption of mutable instruments "plaits" / 8 HP ⇣ PYXIS condenses all of Plaits' functionalities into a more compact hp footprint, while further pushing the principle of "simplicity first" to unparalleled heights. 1/3 key features Please check out the original module by Émilie Gillet which is an all time Eurorack classic already Illuminated Pyxis Logo Wrong Polarity Protection specs & downloads width: 8 HP depth: 28 mm power: 50 mA @ +12V / 5 mA @ -12V documentation videos description / manual In order to easily tweak and change the sounds there are four main potentiometers that will change Timbre, Harmonics, Morph and Variant, which is any possible mixture of OUT and AUX. Freq has been put onto a small trimmer potentiometer to avoid any accidental change in pitch. On the bottom of the panel you will find all necessary jacks to control Pyxis via CV. Timbre, Morph and Freq have dedicated attenuverters to adjust the incoming CV signals. Yeah…but…where are the LEDs? Instead of always directly jumping to chord mode and watching the LEDs change, isn‘t it much better to listen and trust your ears to choose the right sound? Tweak the four potentiometers, change the program with the two buttons (Sound and Percussion Mode) and listen to the wide range of sounds Pyxis is able to generate. Let yourself be surprised what is hidden behind the programs you would usually not choose following the LED indicators. Released under cc-by-sa-3.0 license: Pichenettes Mutable Instruments prev Up next

Oscillator eurokastle / eurorack version of the bastl kastle / 10 HP ⇣ This is a Eurorack adaptation of the renowned Bastl Instruments Kastle – a digital synthesis playground. Embodying the full spectrum of Kastle 1.5 functionality, this version features subtle modifications to seamlessly integrate into the Eurorack format. KASTLE_BACK.jpg 1/3 key features Please check out the Bastl Desktop Synths for further details and consider buying one - it´s worth it! Use with Bastl Kastle or Drum Kastle Firmware Illuminated EuroKastle Logo Wrong Polarity Protection specs & downloads width: 10 HP depth: 28 mm power: 47 mA @ +12V documentation videos description / manual Switching between OSC mode and Rungler mode has been streamlined with a convenient switch, eliminating the need for intricate cable patching. Furthermore, each functionality is consolidated to a single input/output, simplifying your setup. Notably, our EuroKastle boasts a unique Waveshape CV attenuator absent in the original Kastle design. While we highly recommend Bastl's desktop version, the EuroKastle can stand independently. You can independently source all the required components, without necessarily needing the original. It's important to note that the PCB lacks an AVR ISP header. To program the Attiny85 ICs, a prior flashing process is essential before they find their place in the IC sockets (a breadboard can be utilized for this purpose). The programming process can be completed using any AVR ISP programmer. Powering the EuroKastle is a breeze with compatibility with standard Eurorack power supply units. Version V2 introduces AVR Headers to the PCB's bottom for direct ATTiny programming on the PCB itself. The diode pads have been thoughtfully enlarged for an enhanced soldering experience. Additionally, the CV Sources are normalized to the CV Input switches, facilitating instant modulation without the need for external patching. In Version V3, we've incorporated a jumper that allows you to transform the Mix OR OUT socket into a TRIGGER INPUT for the Drum Kastle firmware, enhancing your creative possibilities. For those seeking additional technical details and resources, we encourage you to explore the following links: Bastl Schematics Bastl Instruments Official Website prev Up next

ST CASE SMALL is a 20HP 3D printable Eurorack case designed to hold a small power supply (e.g. POW!) and an effects module to build a modular-compatible effects unit the size of a guitar pedal. Of course, you can also mount any other type of module that suits your needs. The internal depth of the cabinet is 35mm, the rails are inserted from the side. It is recommended to glue small rubber feet underneath to ensure a good stand. st case small / 3d-printable eurorack case / 20 HP ⇣ ST CASE SMALL is a 20HP 3D printable Eurorack case designed to hold a small power supply (e.g. POW!) and an effects module to build a modular-compatible effects unit the size of a guitar pedal. Of course, you can also mount any other type of module that suits your needs. The internal depth of the cabinet is 35mm, the rails are inserted from the side. It is recommended to glue small rubber feet underneath to ensure a good stand. There is a large hole at the bottom for easy access to the power cables and calibration trimmers or bridges. This makes this enclosure ideal for testing purposes. To have your ST CASE SMALL printed, you can download the STL-file below and contact your preferred 3D printing service. It is best to use PLA or PETG filaments. The average cost of printing the enclosure at an online print shop is around 15€ to 30€ (PLA; black; no finish). Local 3D printing services are often cheaper than those you find online. If you print the enclosure yourself on your own printer, it costs about 3€. The case shown on this page was printed with PLA on a Bambu Lab X1C. key features 3D-Printable Low-Cost Slide-in Rail Brackets Lightweight specs & downloads width: 20 HP depth: 55 mm power: no psu DOWNLOAD STL (ZIP) Up

1U Module ap / cv gate swap & switch / 14 HP ⇣ AP can be used to switch signals on and off or sw ap them between two destinations. 1/3 key features Swap & Switch CV Gate activates Switch Manual Switch LED Indication Available in Intellijel Format Skiff friendly specs & downloads width: 14 HP depth: 30 mm power: 19 mA @ +12V / 14 mA @ -12V documentation videos description / manual When a gate signal is ap plied to the GATE input IN B is connected to OUT A and IN A is connected to OUT B. When the gate signal is low, IN A goes to OUT A and IN B is connected to OUT B. You can also switch the signal manually using the latching switch in the middle of the module. If nothing is connected to IN A, +5V are provided at the active output socket. This way you can use AP as a manual gate or as an alternating gate trigger for two targets. prev Up next

MIDI THRU serves as an operational MIDI multiplier, enabling a 1 to 5 connection, utilizing 3.5mm TRS jacks. In contemporary times, numerous devices incorporate TRS jacks for their MIDI connectivity. To establish connections with standard MIDI cables, you would require 3.5mm stereo audio jack plugs to MIDI DIN 5-pin adapters. Additionally, the majority of MIDI tools are exclusively designed with traditional MIDI DIN jacks. This is where the functionality of MIDI THRU becomes evident. midi thru / active 1x5 trs midi thru / 0 HP ⇣ MIDI THRU serves as an operational MIDI multiplier, enabling a 1 to 5 connection, utilizing 3.5mm TRS jacks. In contemporary times, numerous devices incorporate TRS jacks for their MIDI connectivity. To establish connections with standard MIDI cables, you would require 3.5mm stereo audio jack plugs to MIDI DIN 5-pin adapters. Additionally, the majority of MIDI tools are exclusively designed with traditional MIDI DIN jacks. This is where the functionality of MIDI THRU becomes evident, allowing direct connections between your TRS MIDI devices without necessitating adapter cables. key features USB MIDI THRU 1 Input, 5 Outputs A or B-Type TRS Input LED Indication Plug & Play USB Powered Optional TRS-Switch for the Outputs 0HP Desktop-Tool documents Optional TRS-Switch (Type A ↔ Type B): description / manual There is one MIDI input which is switchable from TRS MIDI Type A (this is the new standard used by KORG, Make Noise, AKAI and IK Multimedia) to TRS MIDI type B (this is the old alternative standard used by Arturia, Novation or 1010Music) by means of a push button. The input signal is actively multiplied to 5 TRS-Type A outputs. An LED indicates if a MIDI signal is being processed. MIDI THRU is powered via USB-C. Since it is an active device, it can only be used in one direction. Therefore, the outputs cannot be used as inputs. If you need a simple TRS-A to TRS-B adapter, please check out the workmate trs switch . Up

Modulation & Random clanches / branches with internal cv clock / 6 HP ⇣ CLANCHES is an 6 HP clock source and dual random gate. It is a modification of Émilie Gillet's module Branches. 1/3 key features Internal Clock Source Dual Random Gate CV Clock HOLD Function Probability CV Clock normalled to both Gates 3x LED Two separate Gate Inputs Probabilty CV Skiff friendly specs & downloads width: 6 HP depth: 28 mm power: 60 mA @ +12V / 35 mA @ -12V documentation videos description / manual The internal clock indicated by the LED located in the centre is normalled to both inputs of the random gate. If there is an external trigger patched to one of the IN jacks, this connection will be interrupted. The gate takes a trigger or gate as an input and routes it to either one of its two outputs A and B according to a random coin toss. You can manually adjust the internal clock rate. A Switch changes the range from slow over moderate to very fast.The CV input gives you the opportunity to use control voltages in order to adjust the clock speed. Any signal above 3V will vary the rate. If the signal drops below 3V the clock generator is forced to hold. This way you can generate very interesting rhythms by just patching a random signal or LFO into the Clock CV. The internal clock is furthermore supplied via the OUT jack. The two manual controls P1 and P2 and their corresponding CV inputs change the probability of a signal to be routed to one of its outputs. In extreme settings, the outcome is no longer random causing the module to behave like a voltage controlled switch. The two LEDs on top indicate which output of each channel has been selected to route the signal. In contrast to the original Branches module the two toggle switches simple change the behaviour if the P1 or P2 is set fully clock- or fully counter clockwise. If you hold the button for 2 seconds once the signal will be routed to A and B alternately with each incoming trigger. In normal mode the will just be routed to A (CW) or B (CCW). prev Up next

Mixer & VCA phoebe / 4-channel afl mixer with aux send / 18 HP ⇣ PHOEBE stands out as a highly interactive 4-channel mixer that seamlessly integrates into any Eurorack configuration, offering a tactile experience that complements diverse setups. 1/3 key features 4 Channel Mixer 4 x Mute / Level / Aux Send 2 x Send/Return (per Channel and Selected) AFL (After Fade Listen) via Headphone Out Smooth Transitions with Slider Pots Performance-Orientated Mixing Wrong Polarity Protection specs & downloads width: 18 HP depth: 30 mm power: 70 mA @ +12V / 50 mA @ -12V documentation videos description / manual PHOEBE has four channels. Each channel has a MUTE switch, a LEVEL control and a SEND knob in order to use external effects. Underneath these controls there is the MIX/AFL Fader which determines if the signal should be routed to the MIX or the HEADPHONE output jack. In the top „MIX“ position the channel´s audio is routed to the MIX out. In the bottom „AFL“ position it is routed to the HEADPHONE out. AFL stands for „After Fade Listen“ and enables you to listen to the channels audio before you add it to the MIX output. It is similar to PFL (Pre-Fade Listen), but the signal is taken after the LEVEL settings in order to have a good mix comparison on the headphones. Imagine you are playing a live set and want to take a sound from the mix in order to add a new one from the same VCO later on. Simply pull the fader slowly from MIX to AFL in order to take it smoothly from the MIX out. Then change the sound, edit sequences etc. and listen to the result on the headphones first. Add the mix output signal to the headphones with the little MIX trimmer potentiometer and verify if the new sounds fits the mix. Then just push the fader up into the MIX position and the transition is complete. The upper position of the slider always equals volume that is set with the LEVEL knob. So it´s save to bang it up for breaks and cuts during your performance. You may adjust the headphone volume with the VOLUME trimmer potentiometer. In addition to the SEND and RETURN effect routing per channel there is also a second SEND S and RETURN S routing which lets you send the signal of several selected channels (via jumper on the back) with one knob at once. Both SEND/RETURN ways are active also when the channel is in AFL mode and not being supplied to the mix. This way you can add the effect return of a channel to the mix even if the original sound is currently not playing. All channels have dedicated GAIN trimmer potentiometers on the front. prev Up next

Oscillator hh / analog hi-hat and noise generator / 4 HP ⇣ HH is a very simple, but handy little module that completes any modular drum rack. 1/3 key features Analog Hi-Hat and Noise Generator Internal Decay Envelope Internal VCA CV Control over VCA Offset CV Attenuator Adjustable Noise Colour: Brown, Pink, White Illuminated ST Modular Logo specs & downloads width: 8 HP depth: 28 mm power: 35 mA @ +12V / 25 mA @ -12V documentation videos description / manual HH is an analog Hi-Hat and Noise generator with an internal VCA and decay envelope. The Module can be triggered by a trigger signal at the TRIG Input. Using the DECAY potentiometer you can open and close the Hi-Hat. The ST Modular logo will flash according to the decay envelope. This may also be voltage controlled with any CV signal at the CV input. The voltage changes the internal VCA offset, but does not affect the decay envelope. The incoming voltage can be attenuated using the dedicated attenuator potentiometer. An LED indicates the current state of the voltage. Additionally you may also change the colour of the noise being generated with the COLOUR pot. Fully counter-clockwise the noise will equal Brown Noise with reduced high frequencies. At noon it will sound like Pink Noise, which is a bit louder at the low-frequency end of the spectrum, and softer at the high end. Almost fully clockwise it will be White Noise, broadly spread across the sound spectrum, sounding like a waterfall. Fully clockwise the noise will be boosted on all frequencies to have a more present noise spectrum. prev Up next

CV Bench is a small and handy version of Mutable Instruments´ CV PAL, a USB MIDI to CV Interface. It enables you to control your modular from a computer or a tablet. Simply connect CV Bench with a Micro USB cable to your USB host device and you are ready to send Gates and CV to your modules. No further driver installation is required, you can directly select CV PAL as your midi port in your DAW´s midi settings. cv bench / usb midi to cv interface / 0 HP ⇣ CV Bench is a small and handy version of Mutable Instruments´ CV PAL, a USB MIDI to CV Interface. It enables you to control your modular from a computer or a tablet. Simply connect CV Bench with a Micro USB cable to your USB host device and you are ready to send Gates and CV to your modules. No further driver installation is required, you can directly select CV PAL as your midi port in your DAW´s midi settings. Unlike to the original, this version has shrunk to a tiny desktop tool that can sit directly in front of your modular. You don´t have to give up any of your precious HP. It also features two GATE LEDs that indicate when a gate signal is present at the gate jacks. CV BENCH is powered by the USB cable. key features USB MIDI to CV Interface 2 Channels Over 10 Midi Modes Gate LED Indication documents Plug & Play USB Powered 0HP Desktop-Tool description / manual The interface has two channels that can be used in various different ways depending on the MIDI channel applied. The most popular modes are: Channel 1: Monophonic mode OUT 1: Note CV OUT 2: Velocity CV GATE 1: Gate GATE 2: Gate Channel 3 / Channel 4: Dual monophonic mode OUT 1: Note CV for channel 3 OUT 2: Note CV for channel 4 GATE 1: Gate for channel 3 GATE 2: Gate for channel 4 Channel 5: Duophonic mode OUT 1: Note CV output 1 OUT 2: Note CV output 2 GATE 1: Gate GATE 2: Gate Channel 10: Drums OUT 1: BD (note 36) trigger OUT 2: SD (note 38) trigger GATE 1: SD2 (note 40) trigger GATE 2: CHH (note 46) trigger CV BENCH works with the same firmware as the original CV PAL. Since it uses an unusual USB setting, you may experience message delays on systems running Windows. Please see the video below where I used CV BENCH to control my modular from Ableton on a Windows 10 computer and decide yourself if you feel any jitter or delays. Released under cc-by-sa-3.0 licence. You may refer to the original CV PAL manual for further information. Resources: https://github.com/pichenettes/cvpal https://mutable-instruments.net/archive/cvpal/manual/ Up