Oscillator cinco / five oscillators in a module / 14 HP ⇣ CINCO consists of a series of five oscillators that can be controlled in pitch from a single source. It generates drones, chords and massive walls of sound that stand out impressively from classic single-wave oscillators. 1/3 key features Five Analog Oscillators 2x Saw or Pulse and 3x Saw Waves Individual Pitch Controls Single CV Pitch Input Transpose all Oscillators Internal Mixer Individual Outputs Pulse Width Control (OSC 1 & 2) FM Inputs (OSC 3, 4 & 5) Skiff friendly Wrong polarity protection specs & downloads width: 14 HP depth: 30 mm power: 65 mA @ +12V / 43 mA @ -12V documentation videos description / manual Cinco boasts five analog oscillators capable of generating drones or chords comprising five notes, accessible from the MIX OUT socket. Each oscillator's tuning can be adjusted independently using the TUNE and FINE controls. Simultaneous pitch control for all five oscillators is facilitated by patching CV to the CV ALL input. Moreover, the TUNE ALL knob allows for collective transposition of all oscillators, with the range of transpose amount adjustable via a trimmer located on the module's rear. While Cinco wasn't specifically designed for precise 1V per octave tracking, you can achieve close approximation by calibrating tuning using trimmers located on the module's back. The first oscillator is slightly tuned below the rest, while the last oscillator is slightly tuned above. The fixed oscillator tuning can be changed with optional capacitors on the circuit board. Oscillators 1 and 2 offer a choice between a SAW or PULSE waveform, each selectable via dedicated toggle switches. Pulse width adjustment can be done manually using the PLS WIDTH knobs or via CV modulation. In the case of CV modulation, the PWM knob controls the intensity of the modulation. It's important to note that these PWM knobs aren't attenuators; hence, incoming CV cannot be completely deactivated for pulse width control but can be reduced to a pleasant level. Oscillators 3 to 5 exclusively output a saw waveform and include additional frequency modulation inputs (FM IN). Applying voltage to these inputs modulates the frequency (pitch) of the oscillators. The FM AMT controls determine the degree of CV influence on the frequency. Similar to previous controls, the FM AMT knobs aren't attenuators, meaning full left rotation won't completely eliminate FM, but rather reduce it to a minimal level. Notably, the FM IN input of oscillator 3 is normalized to the other FM inputs. This facilitates pitch control for oscillators 3 to 5 alongside the primary CV ALL pitch input. If desired, this normalization can be disabled by desoldering an SMD bridge located on the back of the PCB or by connecting dummy cables (patch cables that are not connected further) to the other FM inputs. Utilize the five LEVEL controls to precisely adjust the volume of each oscillator or completely deactivate them by turning the controls fully counterclockwise. Additionally, each oscillator is individually outputted via the OUT sockets located at the bottom, allowing for further isolated processing of the signals with external modules. Importantly, these individual outputs are not affected by the LEVEL controls and typically produce louder signals compared to the mixed output. Cinco isn't just a source for rich and harmonically versatile analog sounds; it's also capable of generating harsh and earthshaking waveforms, particularly when utilizing the FM inputs. CINCO QUICK START GUIDE: CINCO_QUICK_START .pdf Download PDF • 782KB prev Up next

A semi-modular analog desktop-synthesizer featuring a dual complex oscillator characterized by simple and clear operation and uncompromised sound. Designed as an instrument that can be built, explored and learned. A semi-modular analog desktop-synthesizer Featuring a dual complex oscillator characterized by simple and clear operation and uncompromised sound Designed as an instrument that can be built, explored and learned MAIN FEATURES TWO ANALOG OSCILLATORS Two Voltage Controlled Oscillators with classic waveforms, waveshapers, sub-octaves and a noise source. Convenient sliding potentiometers for volume control of the waveforms. Based on the famous CEM3340 chip and a newly developed wave-shaping tone generator. TWO SEQUENCERS Play notes with a 5-STEP trigger and CV sequencer and an additional 4-STEP CV sequencer. Transpose and change the length of a sequence, control the tempo via CV, add swing or sequence manually with the push of a button. OSC MIX & VARI BOARDS Seamlessly blend the oscillators manually or by CV. Insert external audio and pass it through the Filter or internal Reverb. VARI BOARDS are interchangeable boards, each offering a different functionality. Choose the VARI BOARD that meets your requirements. DUAL LPG, VCA & ADSR Each oscillator is processed by a filter-based low-pass gate (LPG) and both are optionally routed through an internal AC-coupled VCA. Use the internal ADSR envelope to shape and express your sounds. MODULATION & TOOLS Get your sounds moving with the internal CV-controllable LFO and the Buchla 281e-inspired function generator. Multiply, invert and amplify your signals with a buffered multiple and an additional DC-coupled VCA. REVERBERATION Add depth to your analog sounds with the internal reverb unit. Connect either an Analog Spring Tank or a Digital Reverb Brick. Apply Reverb Feedback and control the Dry/Wet Portion via CV. DO IT YOURSELF! EUPHORIA is only available as a DIY-project and was designed to be built by passionate builders. It consists of fourteen individual circuit boards that are mounted on one controller board Youtube Playlist AUDIO SPECIFICATIONS PRIMARY OSCILLATOR CEM3440 based VCO 5 Waveforms plus Noise Pulse-width Modulation (PWM) Linear and Exponential FM Waveshape CV Two selectable Suboctaves SECONDARY OSCILLATOR Waveshaping Tone Generator 5 Waveforms plus EQ 2x CV Wavefolders Pulse-width Modulation (PWM) Linear and Exponential FM Two selectable Suboctaves Oscillator Sync SEQUENCER FEATURES Two Synced Sequencers Trigger and CV control Clock divider Tempo CV and Swing Individual Sequence Lengths Reset and Transpose Function PERFORMANCE FEATURES 2x LPG and 2x VCA LFO, ADSR, MULT incl. INVERTER Function Generator OSC CV Mixer External Input Reverb with Dry/Wet CV & Feedback Headphone Output PANEL GALLERY 1/22 16 PCBs in total 1680 Parts to be soldered or mounted 600€ Estimated total costs per DIY build ∞ Hours of EUPHORIA BUILD GUIDE, CALIBRATION, MANUAL & BOM All the information you need to successfully build and play EUPHORIA, such as a user manual and building instructions, can be found in the support section support Up

Filter & EQ efi / dual-mode analog filter / 4 HP ⇣ EFI is an analog multi-mode filter that draws inspiration from the iconic KORG MS-20 filter, refined to seamlessly fit within a compact 4 HP module. Celebrated as one of our top-performing modules, EFI stands as an essential addition to smaller modular setups, allowing you to save valuable HP without compromising on functionality. EFI_BACK.jpg 1/3 key features Analog Dual-Mode-Filter Filter Modes: LP, HP (+ LP Overdrive via Jumper) Resonance Control Two CV Inputs Two CV Attenuators Wrong Polarity Protection specs & downloads width: 4 HP depth: 28 mm power: 26 mA @ +12V / 24 mA @ -12V documentation videos description / manual The front panel features a switch for easy toggling between Low Pass and High Pass Modes. Alongside, you'll find two CV inputs, each equipped with its own attenuator for precise control. Experience the potential for self-oscillation with the Resonance, while a third mode can be accessed via a back-panel jumper. In this mode, the Resonance swiftly overdrives in Low Pass Mode, producing captivating liquid-like overtones. Building this module is a breeze, requiring only 24 readily available components, making it an accessible DIY project. prev Up next

Mixer & VCA feed v2 / voltage controlled aux send with eq / 4 HP ⇣ Feed V2 is an integrated VCA and EQ unit designed to function as a voltage-controlled aux send module. The latest iteration, V2, features enhancements in its Tone response and has undergone a reduction in horizontal pitch from 8HP to 4HP for increased space efficiency. 1/3 key features Voltag Controlled Amplifier Volume Control CV Attenuator Built in EQ Original signal is routed to THRU out Wrong polarity protection Skiff friendly specs & downloads width: 4 HP depth: 25 mm power: 30 mA @ +12V / 12 mA @ -12V documentation videos description / manual If you insert an audio source into the jacks IN it will be directly routed to the THRU jack where you may use you original signal for further processing. The signal is also directly routed to the VCA. Here you can control the volume or amplitude of the audio either manually or via control voltage using the CV jack. Additionally you may change the frequencies of the signal using the TONE potentiometer. Turning counterclockwise will add low and cut high frequencies und turning the knob clockwise will cut low and boost high frequencies. This works well with drums that will be send to an delay, reverb or any other effect when control voltage is being send to the CV jack. prev Up next

Oscillator give v2 / classic analog vco with sub-octaves and waveform mixer / 14 HP ⇣ GIVE V2 is a sonic powerhouse that transcends the boundaries of traditional sound generation. The module is an exceptional analog VCO accompanied by a versatile waveform mixer and three suboctaves 1/3 key features Classic Analog VCO 5 Outputs: SAW, TRI, SUB, NOISE, PULSE 1V/Octave tracking Pulse Width Modulation with Attenuator Frequency Modulation with Attenuator Integrated Waveform Mixer Skiff friendly design Wrong Polarity Protection specs & downloads width: 12 HP depth: 28 mm power: 31 mA @ +12V / 28 mA @ -12V documentation videos description / manual The VCO provides five outputs, the last four of them can be mixed with an integrated mixer:PULSE, SAW, TRIANGLE, 3x PULSE SUB & NOISE Patching a voltage/audio source into FM you can frequency modulate the oscillator. Incoming voltages can be attenuated with FM CV. In the middle of the module you will find the PWM potentiometer. Here you may change the pulse width of the pulse wave. The width may also be controlled via external voltage with the PWM jack and the PWM CV attenuator. Just like all other classic analog VCOs GIVE II also tracks one volt per octave with the help of the 1V/OCT input jack. Each wave can also be hard-synced by an external wave patched to the SYNC jack. In addition to the classic VCO functions GIVE II also provides an integrated frequency divider. The MIX output jack will not only supply the waveforms SAW, TRIANGLE and NOISE, but also provides up to 3 sub octaves derivated from the PULSE waveform. The volume of each sub-octave may be adjusted with the potentiometer SUB 1-3. ORIG will adjust the volume of the original PULSE signal. Using the switch ORIG SQU you can flip the SQUARE waveform. prev Up next

Oscillator honeyeater v3 / cem3340 analog vco with sub-oscillator / 6 HP ⇣ HONEYEATER is a classic analog VCO featuring two sub-oscillators and mixable waveforms. Built around the renowned CEM3340 "Curtis Oscillator" precision VCO chip — found in legendary synths like the Sequential Prophet-5 and Oberheim OB-8 — this module delivers rich and raw analog sounds in a compact, low-HP format. It is one of our most popular modules! 1/4 key features CEM3340 Analog Oscillator 5 Mixable Waveforms White Noise Two Blendable Sub-Oscillators Linear & Exponential FM VC Pulse Width Modulation Skiff friendly Wrong polarity protection specs & downloads width: 6 HP depth: 30 mm power: 56 mA @ +12V / 45 mA @ -12V documentation videos description / manual Honeyeater is the ideal choice for big sounds in compact cases! It serves as a versatile workhorse oscillator, capable of producing both classic and complex waveforms beyond typical analog oscillators. Use the COARSE and FINE knobs to adjust pitch, with FINE allowing smaller, more precise pitch changes. Increase the volume of the Pulse, Triangle, or Sawtooth waves, as well as the Suboscillators, by raising the three faders. Note that waveforms may slightly overdrive in the top third of each fader’s range. You can also switch between a triangle or sawtooth waveform for the middle fader. The SUB MIX knob controls the two sub-octaves: turning it right increases the volume of the sub-oscillator one octave below the root pitch, while turning it left boosts the one two octaves below. At the center, both sub-octaves play equally; at either end, the opposite sub is fully muted. Ensure the SUB fader (3) is raised to blend sub-octaves into the main mix. To add white noise for a grittier sound, turn the NOISE knob to the right. The Pulse Width of the Pulse waveform can be adjusted manually or via CV using the knob above the PWM CV input. Connect any CV source (0V to +5V) to modulate Pulse Width here. The FM input accepts any control voltage to frequency-modulate the oscillator, with modes switchable between linear and exponential via the LIN/EXP switch. Honeyeater supports both hard and soft sync by patching an external oscillator’s output (ideally a sawtooth wave) to the SYNC input. Select between sync types via a jumper on the back of the module. When assembling the Honeyeater yourself, you have the option to use either a DIP-16 through-hole CEM3340 IC or a SOIC-16 SMD variant, which can be mounted using a small adapter board. HONEYEATER QUICK START GUIDE: HONEYEATER_V3_QUICK_START .pdf Download PDF • 453KB prev Up next

Filter & EQ dirty dan / 3-channel vactrol-based analog filter and distortion / 10 HP ⇣ Meet Dirty Dan, the eurorack rebel who doesn't play by the rules of clean and tidy. Dan's all about embracing the mess, dishing out gritty goodness, and making those pristine waveforms second-guess their existence. If your sound needs a touch of snotty charm, Dan's your man. Just remember, he's not just dirty – he's delightfully disruptive! DIRTY_BACK.jpg 1/3 key features Vactrol-Based Analog Filter Three Channels Separate Distortion Stage High Pass and Low Pass Cutoff controls High Pass and Low Pass Two Clipping Modes Feedback Control Skiff Friendly Wrong Polarity Protection specs & downloads width: 10 HP depth: 32 mm power: 58 mA @ +12V / 54 mA @ -12V documentation videos description / manual The module has three input jacks. The first two inputs are directly connected to the vactrol filter. The third input first goes through an additional diode-distortion circuitry and is then connected to the vactrol filter. Each input jack has a dedicated volume control potentiometer. Hence you may use Dirty Dan also as a Dirty Mixer. The amount of distortion for channel IN 3 can be set with the DIST potentiometer. Additionally soft and hard clipping may be activated with the switches DIST SOFT and DIST HARD. It´s best to use a sine wave to hear the differences between the clipping modes. The distorted signal can be taken from the DIST OUT jack separately and is then being disconnected from the vactrol filer and the other two inputs respectively the OUT jack. This allows you to process the distorted audio with external modules. The filter itself is vactrol-based and has it´s own nature. The sound varies depending on the vactrols being used. It´s fine to solder retail vactrols like the VTL5C series, but the fun starts when DIY vactrols are being used. The sound from the inputs will go through a high pass filter, that can be set with the HIGH PASS potentiometer. Also a low-pass filter will take effect. This can be controlled with the CUTOFF pot. This pot is not called low-pass as you might expect, because the HIGH PASS settings directly influence the CUTOFF pot. If the HIGH PASS knob is fully counter-clockwise, CUTOFF acts as a classic low-pass filter knob. If you turn HIGH PASS clockwise the CUTOFF knob will also act as a high-pass filter in some knob settings turning it further than 12 o´clock. This way you can blend between low-pass and high-pass with one knob, the CUTOFF knob. Either low-pass or high-pass may be CV controlled. A third CV input controls both at the same time. The level of control voltage for CV H/L may be varied with the CV H/L attenuator potentiometer. The FDBK potentiometer sets the amount of audio being fed back into the filter circuitry providing a nice resonance to the signal. The range of feedback amount can be set with a trimmer on the back of the PCB. 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

Filter & EQ hans / compact stereo diode-ladder filter and lfo / 6 HP ⇣ HANS is a compact 4-pole low-pass stereo diode-ladder filter with an internal LFO. Inspired by the famous diode ladder filters found in EMS and Roland TB-303 devices, this filter delivers a distinct and unique sonic character. The module also features an internal LFO for dynamic movement of the cutoff frequency. 1/2 key features Diode-Ladder Filter 4-Pole Low-Pass Design Stereo Inputs and Outputs Cutoff CV Control with Attenuator Internal Triangle LFO with Level Control LFO Output Only 6 HP wide Skiff friendly Wrong polarity protection specs & downloads width: 6 HP depth: 30 mm power: 35 mA @ +12V / 29 mA @ -12V documentation videos description / manual Designed for stereo signals, HANS comes equipped with stereo inputs (IN L and R) and stereo outputs (OUT L and R). However, if you want to use a mono signal, connect it to the IN L socket, which is internally normalised to the IN R input. Manual control of the filter cutoff frequency is achieved with the FREQ potentiometer. Additionally, the cutoff can be modulated using the internal LFO and/or external control voltage (CV). Adjust the LEVEL knob to introduce a triangle LFO to the cutoff frequency, cycling from +0V to a maximum of +10V. The RATE knob, indicated by an LED indicator, allows you to set the LFO's speed. It is designed for long cycles and enables very slow movements lasting more than 10 minutes, but does not achieve audio rates. To disengage LFO control, simply reduce the LEVEL knob. Simultaneously, external CV can be patched to the CV input, with the CV attenuator enabling external control of the filter's cutoff frequency. An LED indicates the current voltage level of the external CV. Improve the characteristics of the filter by using the RES potentiometer to apply positive feedback that emphasises higher frequencies. The signal may be distorted at very high resonance settings. Self-resonance is possible, but only at very high frequencies. For further external processing, the internal LFO's triangle waveform is accessible at the LFO output. This feature adds flexibility to your modular setup, enabling creative possibilities beyond the module's primary functions. HANS QUICK START GUIDE: HANS_QUICK_START .pdf Download PDF • 485KB prev Up next

Modulation & Random good & evil / chained lfo and random voltage generator / 12 HP ⇣ GOOD & EVIL ingeniously captures both order and chaos within a single voltage generator module. Its versatility extends to controlling numerous parameters in other modules, making it an ideal companion for crafting gradual shifts in ambient soundscapes or venturing into dynamic and evolving patch creations. 1/3 key features Four Chained LFOs Controllable Time Attenuator per LFO Output Four Random Voltages Adjustable Amount of Random and Chaos EVIL CV Input Random Gate Wrong Polarity Protection specs & downloads width: 12 HP depth: 28 mm power: 75 mA @ +12V / 55 mA @ -12V documentation videos description / manual The GOOD side consists of a chain of four LFOs. Each LFOs only starts to rise when its predecessor descends. The four knobs control the time it takes for each LFO to rise and simultaneously controls the time it takes for the predecessor to descend. The LFOs have individual outputs with an attenuator. This row of low frequency oscillators can either create very slow envelopes followed by fast changes, just very slow voltage changes or a chain of fast swinging LFOs with their voltage never being the same on the four outputs at a time. The EVIL side generates random voltages that can be influenced by the knobs EVIL 1 and EVIL 2. These change the amount and amplitude of chaos being created. The voltages may move very slow, but also evolve to a burst of changing voltages over the course time. Just like on the good side there are also four outputs on the evil side. Additionally there is a GATE output that provides random gates in conjunction with the EVIL voltages. The EVIL CV input gives voltage control over the amplitude of chaos. An attenuator may lower the amount of voltage being inserted to the EVIL side. The last LFO of the GOOD side is normalised to the CV input of the EVIL side, if no patch cable is inserted into EVIL CV. The voltage range is between +/-3V for GOOD and +/-10V for EVIL. The EVIL outputs usually wobble and meander around +/-2V, but also show peaks of +/-5V, and +/-10V (expecially output V). Using the EVIL CV input forces the circuit to generate peaks more frequently. The gate has a voltage of approx. +6V. prev Up next

Enhance your ST Modular journey through dynamic discussions, valuable feedback, and an active and lively community. FORUM To test this feature, visit your live site. Categories All Posts My Posts Create New Post General Discussion Open for all topics about any subject related to this forum, the website, or ST Modular in general. subcategory-list-item.views subcategory-list-item.posts 4 Follow Modules Comprehensive discussions on module announcements, functionality, aesthetics, characteristics, and tactile experience. subcategory-list-item.views subcategory-list-item.posts 30 Follow Ask for Help! Non-operational modules, problem-solving, and collaborative assistance from fellow builders! subcategory-list-item.views subcategory-list-item.posts 74 Follow Music Showcase your patches and musical creations using STM modules. Join to share and discuss your sounds! subcategory-list-item.views subcategory-list-item.posts 2 Follow New Posts Peter Apr 06 Case Pow V2 BOM Ask for Help! Hi, Please share the Mouser BOM for the Case Pow. I can't find it. Cheers! Like 1 comment 1 Andreas Apr 04 JTAG Pinout (Drum, Trommelmaschine) Ask for Help! Hi Stephan, I've found no description of the JTAG pinout in the BOMs or module descriptions and just to be sure: from looking at the traces in the IBOM I think this is the correct pinout. Can you confirm this? thanks and best regards Andreas Like 2 comments 2 Peter Apr 06 1u ToolBox Jumper Ask for Help! Hi! I just finished the 1U toolbox, Please explain to me (but like to a 5 years old) how to use the jumper on the back, I'm not shure if i understand it right. Cheers! Like 2 comments 2 Forum - Frameless Up

Modulation & Random lfor / digital lfo and stepped random generator / 4 HP ⇣ Combining a digital Low Frequency Oscillator with a Stepped Random Generator, this module offers three distinct voltage outputs in the form of Pulse, Triangle, and Random waveforms. The LFO functions as both a voltage and trigger source, while the Stepped Random feature can be seamlessly looped for continuous operation. LFOR_BACK.jpg 1/3 key features LFO with 3 Waveforms Triangle, Pulse and Stepped Random LFO Rate potentiometer Voltage Control over Rate LFO Reset Stepped Random lockable to 16 or 8 steps Random Voltages normalized to LFO Rate Pulse can act as Rythm Generator Wrong polarity protection Skiff friendly specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 20 mA @ -12V documentation videos description / manual The LFO provides three voltages in shape of Pulse, Triangle and Random. It can be used as a voltage and trigger source. The frequency of the LFO can be changed using the Rate potentiometer on top. The LED is indicating the current speed. The Rate of the LFO may be voltage controlled using the Rate CV jack. The small potentiometer acts as an attenuator. Additionally the LFO cycle can be reset via a trigger signal at the Reset jack. The Triangle output provides a standard triangle waveform. Random supplies a randomly stepped voltage at LFO rate. This random voltage is normalized to the LFO CV in creating some interesting random voltages on the other outputs. This connection can be interrupted by inserting a patch cable to Rate CV. Using the Random Lock Switch it is possible to lock the random steps to identical patterns of 16 (mid position) or 8 (down position) steps. If the switch is positioned upwards it is completely random. Patching a voltage to RNDM CV will give you CV control of the Random Lock (switch must be in mid position). Any voltage above 3 volts will produce random steps, any voltage below 4 volts will lock the random out to a pattern of 8 steps. Pulse out is not a typical pulse wave you would expect from an LFO. It is rather a rythmical trigger producing one long pulse at the start of the cycle and a short pulse at the end. This way and by the normalized random voltage (if the CV attenuator is turned clockwise), you will have a wide range of random or locked pulses to trigger VCAs or sequencers. A simple AVR-programmer is neccessary to complete the build. Nevertheless it is a very easy build with only 37 parts in total. prev Up next