Sequencer shikensa / cv and trigger sequencer / 12 HP ⇣ SHIKENSA is a 5-stage CV and trigger sequencer with some nifty features. 1/3 key features 5-Step Analog Sequencer Outputs 3 CV and 1 Trigger Signal 3 Different Track Lengths Internal Clock with Swing and Tempo CV External Clock, Reset and Hold ADD Input for Sequence Transposition LEVEL Control via CV for LVL OUT Wrong Polarity Protection specs & downloads width: 12 HP depth: 28 mm power: 55 mA @ +12V / 41 mA @ -12V documentation videos description / manual Shikensa offers the flexibility of an internal clock set via the tempo potentiometer or synchronization to an external clock. Its internal clock enables swing effects through the CLK CV attenuator, allowing tempo adjustment using external CV signals at the CLK CV input. Additionally, CV control permits sequence reset or hold actions. It is possible to change the length of the sequence from a maximum of 5 steps to 4 or 3 steps using a toggle switch. There are five sliding potentiometers that allow fine changes in CV values per step. There is a trimmer on the back of the PCB to adjust the maximum voltage from +5V to +10V. SHIKENSA has a total of four outputs. OUT is the standard CV output that you would connect to a 1V/OCT input of an oscillator. If you apply a control voltage to the ADD input, you can transpose the output of OUT. IN/CK outputs either an inverted signal of OUT or the internal clock signal (this can be changed by swapping two resistors). LVL OUT carries the same signal as OUT, but its level can be changed via CV. An attenuator allows control over the amount of change. When nothing is connected to the LVL CV input and the attenuator is turned up, an internal pitch envelope is added to LVL OUT, which is great for creating percussive sound sequences. These three outputs can be used simultaneously to change not only the pitch of an oscillator, but also other parameters such as waveshapers, filters or effects according to the sequence. TRIG provides a trigger signal that can be activated or deactivated per step. Five latching push-buttons on the bottom allow you to create rhythmic patterns. An LED indicates whether a trigger signal is being output. SHIKENSA QUICK START GUIDE: SHIKENSA_QUICK_START .pdf Download PDF • 716KB prev Up next

Effects gritzner / pt2399 delay with two switchable inputs and internal lfo / 8 HP ⇣ GRITZNER Delay is a special kind of module that is able to make all sorts of weird delay sounds, from chorus like effects to total destruction of the original signal. There are no boundaries for your crazyness here. Though the two switchable inputs and the LFO reset always make its output fit into a rythmical pattern of your patch. 1/3 key features PT2399 Delay Two Switchable Inputs, one High-Pass-Filtered Internal LFO for Input Switching Internal LFO for Delay Time Changes LFO with Attenuator and Reset Delay Time CV Input Skiff friendly Wrong polarity protection specs & downloads width: 8 HP depth: 28 mm power: 50 mA @ +12V / 30 mA @ -12V documentation videos description / manual GRITZNER is a short delay with two individual inputs that may be activated alternativley either by hand or with a gate signal. IN A is a standard audio input whereas IN B is a high pass filtered input. Frequencies below 320hz will be filtered out which is quite handy for some delay settings. If the MAN/LFO switch is on the left you can switch between both inputs manually using the A/B MAN switch. If the MAN/LFO switch is in the right position an internal square wave LFO automatically switches between both inputs according to the LFO range set with the help of the LFO potentiometer. Alternatively you may patch an external gate signal (from a sequencer for example) into GATE A/B in order to switch between inputs. The Delay itself is a classic PT2399 delay with its very special touch and a delay time ranging from 30-190mS. It has manual controls for the Delay Rate (going beyond the ICs operation range), Feedback and Wet. The delay rate can be voltage controlled with an external signal or with the help of an internal LFO. You can choose between a triangle and a square wave LFO and you may attenuate its signal with the LFO ATT attenuator. On top the LFO is resettable via the LFO RST input in order to get delay changes in a rythmical manner. The LFO rate can be adjusted with the LFO potentiometer. prev Up next

Mixer & VCA pae / cv pan & fade / 6 HP ⇣ PAE is a voltage controlled Pan or Fade module. 1/3 key features Voltage controlled Pan or Fade Attenuator for incoming Voltage LED Indicators Seperate single Outs for each Channel Wrong polarity protection specs & downloads width: 6 HP depth: 25 mm power: 40 mA @ +12V / 20 mA @ -12V documentation videos description / manual PAE has two inputs for two differnet mono or one stereo signal. Using the Volume potentiometer you can set the volume of each channel separately. Acccording to the potentiometer on top of the module only one or any mixture of both signals will be available at the Out jack. Simultaneously each channel can also be taken from the Out L and Out R output jacks. Additionally Pan or Fade can be controlled via voltage using theCV jack. The small potentiometer on top of the jack acts as an attenuator for incoming voltages. Two LEDs on top of the module show the current state of Pan or Fade. The module is capable of handling CV and audio. prev Up next

Bills of Materials, Interactive BOMs, Stencils, PCB Pictures and other helpful information is available in the support section. BILLS OF MATERIALS & PCB PICTURES Bills of Materials, Interactive BOMs, Stencils, PCB Pictures and other helpful information is available in the support section. support documentation & assistance no manuals? There are no user manuals in file form. However, on the respective module pages, there are FUNCTIONAL DESCRIPTIONS and OPERATING INSTRUCTIONS provided . In addition, QUICK START GUIDES are linked under the descriptions for more complex modules. If you have any questions about the functionality of a module, please post them in the forum. modules no build guides? The PCBs are deliberately crafted for easy assembly. Many builders have discovered them to be SELF-EXPLANATORY and USER-FRIENDLY for soldering . Any specific instructions are clearly stated in the Bills of Materials (BOM). If you need general and detailed help on soldering the modules, please refer to the SOLDERING GUIDE FOR BEGINNERS available on the support page linked below. support questions? To ensure that the requested information reaches all members of the builder's community, KINDLY REFRAIN FROM SENDING EMAILS OR DIRECT MESSAGES. Instead, please SHARE YOUR INQUIRIES IN THE FORUM on this website. It is more likely that you will receive a quick response to a forum post than to an email or direct message sent via various other channels. forum notes for DIY builders It is recommended that ST modular PCBs are only soldered and assembled by experienced builders . If you intend to build an ST MODULAR module, you should be able to solder components in the 0603 footprint . If parts are missing from the DIY Full Kit you have purchased, please contact the seller directly . They are assembling the kits on their own and can offer replacement parts. The successful assembly , the safe power supply and the necessary calibration of the module are exclusively your responsibility . ST Modular operates solely as a licenser of modular designs and does not provide repair services! You are solely responsible for ensuring that the finished module does not damage other devices to which you connect it. ST Modular is not responsible if you injure yourself or others or damage your property or the property of others while building or using the circuit boards provided. No PCBs, complete kits or assembled modules will be available through st-modular.de in the future. If there are any further questions, don't hesitate to ask in the forum . It is more likely to receive a quick reply in the forum than a timely response to an email, Instagram direct message or Facebook message. iBOM For most larger ST Modular projects there are Interactive BOMs available. These will show the location of a selected part in an interactive *.html file in your standard browser. Additionally there is a „Highlight First Pin“ functionality that will help you to find the correct IC orientation. The iBOMs are located in the download section. Important note! Please be aware that the iBOM may occasionally display incorrect values. We recommend using the iBOM tool primarily to assist in identifying components on the board with greater ease. When it comes to obtaining and ordering parts, we advise relying exclusively on the Excel BOM. Up

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

Effects emoo / eurorack adapter module for MOOER guitar effect pedals / 8 HP ⇣ Emoo is an 8HP Eurorack Adapter Module for some of the MOOER guitar effect pedals. 1/3 key features Use most of your MOOER EFX pedals in your modular setup Easy plug and play without dealing with adapter cables Use your Eurorack power supply unit to power your little MOOER pedal Passive Volume Trimmer to limit high Eurorack signals on the back of the PCB Wrong polarity protection specs & downloads width: 8 HP depth: 30 mm power consumption depends on the pedal you choose (from 3mA to 160mA; Sky Verb approx. 130mA) documentation videos description / manual The PCB set consists of a little adapter PCB with a 12V to 9V voltage regulator and the IN and OUT jacks (3.5mm). Additionally there is a Panel PCB that fits most of the little MOOER effect pedals (those with the potentiometers and switches arranged as shown in the graphic on the left). You need to buy the original MOOER pedal in order to use this module in your eurorack setup. The adapter PCB may be used with any other guitar pedal requiring a 9V power supply. In this case you need to make the panel yourself. prev Up next

Sequencer isi wren / repeatable random gate and cv generator / 4 HP ⇣ ISI WREN is a great sequencer to quickly generate random sequences and lock them on repeat to create catchy and pounding techno synth lines. 1/3 key features Random CV and Gate Looped Sequences Change Sequence Length Adjust Sequence Range Repeat Different Sequences CV Loop ON/OFF CV Length, Range and Repeat Sync to external Clock Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 30 mm power: 35 mA @ +12V / 12 mA @ -12V documentation videos description / manual ISI WREN is a digital sequencer that generates random gate and CV signals synchronized to a clock connected to the CLK input. Depending on the CHANCE slider potentiometer, it either generates random gate and CV signals in the center position or locks the sequence in the upper or lower position. The closer the knob is to the center position, the more frequently the signals change. When a gate signal is patched to the RPT input, the sequence is repeated regardless of the slider position. If you repeat a sequence in the upper position of the slider, two different sequences are repeated alternately. In the lower position, only one sequence is repeated. With the MODE potentiometer you can set the length of the repeated sequence, the CV range and the repetition of the sequences. Set the mode toggle switch to STP and adjust the sequence length from 4 to 16 steps. Switch to RNG and adjust the CV range (octave range). In RPT mode, you can adjust how many times an alternating sequence repeats when the CHANCE slider is in the up position. Mode settings can also be voltage controlled. Patch a CV signal to MODE and adjust its level with the attenuator in order to change the length of a sequence, its range and the repeat mode externally. If no cable is patched to MODE the attenuator acts as a response adjustment of the MODE knob (e.g. smaller range of steps with one turn of the MODE knob if the attenuator is turned to the left). Use the GATE output to control an external envelope generator and connect the CV output to the 1V/OCT input of any oscillator. prev Up next

Modulation & Random envoltura / dual analog envelope / 14 HP ⇣ Experience the classic charm of analog envelopes based on the Roland System 100M 140 Dual ADSR module, made snappier with intuitive visual controls. Furthermore, thanks to its built-in VCA, manual level controls, potent cyclical gate generator, and user-friendly trigger buttons, ENVOLTURA elevates your sound-sculpting prowess to new heights. And when you double it up, prepare for twice the thrill! 1/3 key features Based on System 100M 140 Module Dual ADSR CV Level Control Inverted Output Retrigger Input Push Inputs Short and Fast Switch Manual Trigger Buttons Cycle Functionality Skiff friendly Wrong polarity protection specs & downloads width: 14 HP depth: 30 mm power: 89 mA @ +12V / 56 mA @ -12V documentation videos description / manual ENVOLTURA boasts a highly responsive analog envelope with controls for ATTACK, DECAY, SUSTAIN, and RELEASE. When a gate signal is applied to the GATE input, the envelope is triggered, and a corresponding CV signal is produced at the OUT, with an inverted version available at the INV output. Furthermore, an end-of-cycle GATE signal can be accessed from the EOC socket, which outputs a gate signal when the sustain phase of the envelope ends. The signal remains high until the start of the next attack phase. The gate is indicated by an LED. You have also the flexibility to retrigger the DECAY phase of the envelope by applying a trigger signal to the RTRG input. IN addition to manual level adjustment via the slider level potentiometer, you can modulate the envelope's level using an internal VCA by patching a CV signal to the VEL input socket. An exclusive attenuator enables precise control over the level modulation. For dynamic modulation, simply patch any CV source to the PUSH inputs and manipulate both the envelope's length and level. Fine-tune the overall length range with the SLOW/FAST switches, and if desired, activate the CYC switch to let the envelopes cycle within specific ranges. Please note that cycling may stop for very fast cycles and that the envelope doesn´t restart from 0 volts. Finally, you can also trigger each envelope manually. Please note that both ADSRs are normalised to each other, so that pressing a button always triggers both envelopes, unless a patch cable is connected to the gate input of the other. ENVOLTURA QUICK START GUIDE: ENVOLTURA_QUICK_START .pdf Download PDF • 775KB prev Up next

Effects buff / analog distortion and sustainer / 4 HP ⇣ BUFF is a straightforward yet potent distortion module that can significantly enhance your sounds. It introduces a rich fuzz texture to the input signal, all the while preserving a clear bass and delightful high-frequency response. 1/3 key features Analog Distortion/Sustainer Easy to Build and Cost Effective Tone Control Sustain Control Level Control Wrong polarity protection specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 61 mA @ -12V documentation videos description / manual BUFF can turn any weak-sounding tone into an earth-shaking experience and is especially suitable for creating haedbanging techno percussions. Equipped with a TONE control for accentuating low or high frequencies, and a SUSTAIN control that facilitates the creation of a protracted and velvety sustain. LEVEL dictates the degree of distortion infused into the signal. Kindly be aware that rapidly adjusting the TONE knob may introduce a DC offset, leading to a momentary fading of the sound. Unfortunately, addressing this issue would compromise the delightful quality of the sound in its current state. Kindly decide in advance, whether you are soldering or purchasing the module, if this is a matter of concern for you. prev Up next

Utilities & PSU pedal pal stereo / fx pedal integration module / 8 HP ⇣ Enhance your creative palette by seamlessly integrating your favorite guitar FX pedals into the realm of Eurorack modular. Take command over the amount and tone of the signal sent to your pedal and manipulate the expression pedal input using CV. To double the excitement, this module can handle stereo signals! 1/3 key features Stereo FX-Pedal Integration Expression Input CV Send CV Send and Return Level Controls Send Tone EQ Dry/Wet Control TRS Connections to FX Pedal Use it with Line or Modular Levels Boost Dry and/or Wet Signals with a max. Gain of +20 dB Phase Inversion Switch Skiff friendly Wrong polarity protection specs & downloads width: 8 HP depth: 30 mm power: 59 mA @ +12V / 43 mA @ -12V documentation videos description / manual Connect a stereo or mono signal to the IN sockets (a mono signal to IN L is normalized to IN R), and retrieve the output signal from the OUT jacks. Link your FX pedal's inputs to the SEND output using a TRS audio cable, and connect the FX pedal's output to the RTRN return socket with another TRS audio cable. Fine-tune the blend of dry and wet signals with the central DRY WET knob. The level gain of the dry and the wet signal can be adjusted independently via trimmers on the back of the module. Rotate SEND to the right to increase the audio level sent to the pedal's input. The attenuator beneath the SEND CV jack controls the maximum send signal level, so remember to turn it to the right to activate the SEND jack. Increase the RETURN knob to control the effect signal's level returning from the FX pedal. Be cautious as the send signal can potentially overload the FX pedal's input, so adjust the send amount with care. Both the SEND and RETURN controls provide precise control over the signals sent to and from the effects unit for clean or slightly overdriven signals. The ST Modular logo LEDs indicate whether a signal is being sent from or returned to the module. Turn the TONE knob to the right to emphasize high frequencies or to the left for low frequencies in the SEND signal. Keep it in the center position to have no further effect. Activate the PHASE button to align the audio return signal with the dry input signal if your effects pedal reverses its phase. You may need to make further adjustments to the send and return settings afterwards. The real fun begins when you modulate the amount of audio sent to the FX pedal. Simply introduce a CV signal into the SEND CV input and adjust its level with the attenuator. Furthermore, you can also control the pedal's EXPRESSION input using CV. Connect a TRS audio cable to the EXPR I/O, and the voltage provided by the pedal will be attenuated with the EXPR knob and send back to the pedal, allowing you to manually control the expression parameters. Alternatively, you can patch modular control voltage into the EXP CV input to control the expression parameters of your FX unit, with the EXPR knob acting as an attenuator. The LED indicates when voltage is being forwarded to the pedal. Please ensure you check your FX pedals' specifications before using PEDAL PAL STEREO. Verify whether the pedal supplies its expression voltage on the tip or ring of the EXPR TRS cable and the accepted voltage level (most commonly 3V or 5V). Adjust the corresponding jumpers on the back of the module accordingly. In the video example below, I'm using an EarthQuaker Devices Avalanche Run Delay and Reverb pedal, which provides 3V on the ring of the TRS expression cable. This pedal is particularly well-suited for PEDAL PAL STEREO, as it allows for quick selection of the expression voltage destination, such as reverb amount, delay time, and more. For convenient parameter adjustments, particularly during live performances, potentiometers are positioned on the lower side, ensuring easy access when the module is mounted in the bottom row of a tabletop case. If you are looking for a smaller and simpler mono version, please check out the predecessor PEDAL PAL ! PEDAL PAL STEREO QUICK START GUIDE: PEDAL_PAL_STEREO_QUICK_START .pdf Download PDF • 667KB 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

Modulation & Random adsr / envelope generator offdering three distinct lentgh modes / 4 HP ⇣ ADSR is a classic Envelope Generator creating an envelope with an Attack, Decay, Sustain and Release stage. 1/3 key features ADSR Envelope Generator Regular and Inverted Output Re-Trigger Input Three Length Modes Snappy from 20 micro seconds until evolving to 110 seconds Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 25 mA @ -12V documentation videos description / manual ADSR can be triggered with a Gate signal and will output the envelope with a range of 0V to +8V on the regular output jack and 0V to -8V on the inverted output jack. The envelope may be re-triggered using the RTRG input as long as the Gate on the Gate Input is high. ADSR has three different Length Modes from Slow over Moderate to Fast. The envelope can be very short (20uS) up to very long (110s) making it a useful tool for percussion like sounds and evolving soundscapes. The Moderate Mode is the best option for regular synth sounds. The LED between the A (Attack) and D (Decay) potentiometer indicates the current state of the envelope. prev Up next