ST Modular Kits are SMT DIY projects (surface mount parts, no through hole) what means they are not beginner friendly. This are Panel/PCB kits and you have to source your own parts. All needed infos can be found on the ST Modular website. Like all other DIY kits, building these DIY kits happens on your own risk. We do not offer support, but there is the ST Modular Builders Group on Facebook.


ST Modular - Delay v2

Delay v2 - a very simple 2HP Analog Vintage Delay

It is based on the PT2399 chip, but doesn't have the glitchy artifacts on long delay times. The feedback is also set to have a very moderate effect. Thus this delay is very easy to use. No more speaker crashing feedback loops and no crackling lo-fi noises while increasing delay time.

The module has a LEVEL potentiometer to adjust the level of the output. At higher levels you will get a very nice and subtle amount of distortion. The delay time may be set with the TIME potentiometer. Surprisingly the FEEDBACK knob gives you the possibility to increase the amount of how often the delay will be repeated. There is no dry/wet option here, but you can use the FEEDBACK pot to adjust the delay amount added to the signal.

 

Youtube videos here and here. The module consists of three boards: a) Main PCB, b) front PCB Panel, c) control PCB for LEDs, potentiometers and jacks.

 

Details:

• Warm and vintage sounding delay

• 3 potentiometers

• Very easy to use, sweet spots on every turn

 

Power: 12mA on +5V

Width: 2 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Medium. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Delay v2

12,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Give 2

Give II - 12 HP Classic Analog VCO with additional Frequency Divider and Waveform Mixing Options

Youtube videos can be found here, here and here. It is not a substitution for GIVE I, but rather another version as it is based on the same core circuit. Actually both versions complement each other very well building a powerful complex oscillator. 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 hardsynced 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 suboctave 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.

 

Power: 31mA +12V, 28mA -12V

Width: 12 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Medium. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Give 2

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Boba Fat v1

Boba FAT is a dual voice bass- and kick drum generator. The first voice "soft mallet" generates smooth and warm sounding bass and sub-bass sounds, whereas the second voice "hard mallet" is rather considered to create kick or tom sounds. Here and here are Youtube videos about it.

 

The eight potentiometers on the left control the soft mallet generator. PITCH controls the frequency, LEVEL the volume and BOOST adds low frequencies turning it clockwise and reduces them turning it counterclockwise. MOD RATE and MOD ATT control an internal LFO and its attenuation. The LFO will affect the frequency of the soft mallet voice only. Additionally the LFO can by synced to the incoming gate or trigger.

 

TRIG SLEW acts as some kind attack control and reduces transients making it very easy to create very smooth sub-bass drums. DECAY and RELEASE control the duration of the sounds being amplified by an internal VCA. PRESENCE changes the prominence of the sound.

 

The three potentiometers on the very right affect the hard mallet generator. PITCH, LEVEL and BOOST have the same function as for the soft mallet part. PITCH will have a greater effect from 12 to 5 o´clock. Changes from 7 to 12 o´clock are rather subtle, but are set on purpose to add fine nuances with LEVEL and BOOST there.

 

OUT VOL changes the overall loudness of both drums. GATE accepts any gate or trigger signal to activate the generators. A signal at only at GATE will trigger both mallets. If a additional trigger is inserted to GATE S, GATE only triggers soft mallet and GATE S triggers hard mallet separately. This way you can have indivual drum tracks for both mallets creating very interesting rhythms.

 

A CV signal at MOD CV will override the internal LFO and CV control soft mallet pitch. It doesn’t exactly track 1V/oct, but you will be able to play some melodies. A trigger, gate or clock signal at MOD RST lets you reset the internal LFO with an external signal. Any CV signal at VARI will slightly alternate the volume or generate additional triggers for the hard mallet circuit (depending on the incoming voltage). This gives you endless ways of creating fine grooves and interesting rhythms.

 

The circuit was designed to easily go into distortion and you may be careful using LEVEL and BOOST controls. Boba Fat definitely needs some fine adjustments in order to find the sweet spots. If you feed the GATE input with a trigger at audio rate you can also use BOBA FAT as a weird sound generator or drone machine.

 

Details:

• Analog Drum Generator

• Designed for Kick- and Bassdrums

• Two Voices: Soft Mallet and Hard Mallet

• Each Mallet may be triggered independently

• Internal LFO with Sync

• Volume and Boost per Voice

• Groove CV Input „Vari“ for Hard Mallet

• Mod Cv Input for Soft Mallet

 

Power: 95mA +12V, 65mA -12V

Depth: 30 mm deep

Width: 14 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Boba Fat v1

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Workbench v1

WORKBENCH is a true 0HP USB powered Eurorack module that combines various utilities:

 

Multiple

1 to 3 multiple with one inverted output. The multiple is normalized to the swap unit of the module.

 

LFO

The LFO provides a triangle and square wave and can be reset by an external gate or clock signal. The LFO signal can be attenuated with the slider pot and its rate may be varied with the RATE potentiometer. An inverted copy of the triangle wave is normalized to channel A1. An inverted copy of the square wave is normalized to channel B1. These connections are independent from the LFO attenuator and may be interupted by patching a cable into the channel A1 or B1 input or by the normalization selection switches. You can choose to normalize the LFO or a fixed voltage of 0V to +5V adjustable with the VOLTAGE knob for all channels at once.

 

Attenuator/Mixer

WORKBENCH has four channels A1, A2 and B1 and B2. Any signal (audio or CV) patched into the inputs are attenuated by the slider pots. The channels of each section are daisy-chained, thus they can be mixed or the second channel can act as an offset (CV). The normalization switch selects which voltage will be fed into the input if no cable is being patched (LFO or fixed voltage 0V to +5V).

 

Fader

The Fader mixes between two sources with a single slider. Both channel sections A and B are mixed into a fader circuit, if no cable is inserted into their outputs and the fader inputs. The fader output can be attenuated with the LVL knob.

 

Swap

The Swap unit exchanges the destination of one or two sources with the push of a button. This way you can route two signals to the corresponding destination of the other input. Anything patched into the Mult will also be multiplied to the Swap inputs of nothing is patched here.

 

USB Power

WORKBENCH is powered by standard USB power (+5V) and is fully compatible with your Eurorack system. You can choose to power it with a Mini B, Micro B or Type C USB cable. You can solder all USB connect or just one of them, if you have a favorite USB cable you want to use.

 

A Youtube video is here.

 

Power: 5V USB

Width: 0 HP / Standalone, no Eurorack

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Workbench v1

24,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Euro Kastle v2

Euro Kastle - 10 HP Eurorack version of the Bastl Instruments Kastle Synth

It has all the functionality of the Kastle 1.5 with some tiny amendments to fit the Eurorack format. OSC mode and Rungler mode may be changed via switch instead of patching cables and you only have one input/output per functionality instead of 2 or 3 on the desktop synth. Though it has a Waveshape CV attenuator which is not available on the original Kastle.

 

Although it is highly recommended to buy Bastl´s desktop version, you don´t need to purchase the original in order to build the EuroKastle. You may completely source the parts by yourself. Kindly note that there is no AVR ISP header on the PCB. You need to flash the Attiny85 ICs before they are put into the IC sockets (e.g. using a breadboard). You can use any AVR ISP programmer to complete the programming process. It runs on regular Eurorack power supply units.

 

Version 2: AVR Headers added to PCB bottom for ATTiny programming directly on PCB Enlarged Diode Pads for better soldering experience CV Sources are normalled to CV Input switches for instant wiggling withoug patching itself.

 

Power: 47 mA at +12V

Width: 10 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Euro Kastle v2

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Renemix v1

0HP 6 Channel Mixer, Fader and CV Source and Offset

RENEMIX has 6 individual channels with a fader potentiometer each. If a signal is patched into the channel you can attenuate its signal. If no cable is patched into the input there will be +5V until +10V available at the output, which of course can also be attenuated. The Voltage Range can be set for all channels equally with the VOLTAGE pot. A channel without a CV input singal can offset other channels of the same group (A or B).

 

Channels 1-3 are summed at the OUT A jack. Channels 4-6 are summed at the OUT B jack. All Channels are mixed at the Mix Out Jack. Here you may fade between Channels 1-3 and 4-6 using the A/B Fade potentiometer in the middle of the module.

 

The overall level or volume can be adjusted with the MIX OUT potentiometer. This Mixer was primarily designed for CV signals, but it can also handle audio.

 

You will need the RENEPOW Module to power this 0HP Module. Please note the safety information stated in the BOM!

 

Details:

• 6 Channels

• Variable Voltage Source +5V until +10V

• Sub Group (A/B) Output

• Fade between Sub Groups

• Wrong polarity protection

 

Power: 75 mA at +12V / 46 mA at -12V

Width: 0 HP / Standalone, no Eurorack

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Renemix v1

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - ReneLFO v1

RENELFO has two LFOs that can be reset by a clock/trigger signal. Each LFO produces either a triangle or a square wave selectable via switch. In the mid position of the switch the LFO is deactivated. You may change the LFO´s rate with the help of a dedicated potentiometer.

 

There are also CV attenuators per LFO available. Two bipolar LEDs are indicating the current state of the voltages. In addition to the two LFO outputs there is also a MIX Output that provides a mix of both LFOs.

 

You will need the RENEPOW Module to power this 0HP Module. Please note the safety information stated in the BOM!

 

Details:

• 2 Square and Triangle Wave LFOs

• Individual LFO Rates

• CV Attenuator per LFO

• LFO Reset

• LFO Mix Out

• Wrong polarity protection

 

Power: 42mA at +12V and 35mA at -12V

Width: 0 HP / Standalone, no Eurorack

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - ReneLFO v1

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - ReneMult

RENEMULT is a 0HP utility module consisting of two 1 to 3 multiples and two swap units.

Any CV signal at the multiple inputs will be multiplied to the three corresponding outputs. The last output provides an inverted signal. The input signal may be attenuated with a potentiometer. The multiple inputs are normalized to the swap inputs. The Swap Unit exchanges the destination of one or two sources via a push button switch. This way you can route two signals to the corresponding destination of the other input.

 

You will need the RENEPOW Module to power this 0HP Module. Please note the safety information stated in the BOM!

 

Details:

• Two Indiviual Buffered Multiples

• 1 to 3 Multiples with Inverted Output

• CV Attenuator Multiple

• Two Individual Swap Units

• Two Push Button Switches

• Wrong polarity protection

 

Power: 25mA at +12V and 20mA at -12V

Width: 0 HP / Standalone, no Eurorack

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - ReneMult

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Dirty Dan

3 Channel Vactrol-Based Analog Filter & Distortion. Dirty Dan lives up to his name! Dan is dirty, raw and snotty. Check out the Youtube video. 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 its 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 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.

 

Details:

• 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

 

Power: 85mA at +12V and 54mA at -12V

Width: 10 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Dirty Dan

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1

ST Modular - Cyllene v2

12 HP Classic Analog VCO with an integrated Frequency Divider. Check out this and this Youtube video. 

 

Providing the classic wave forms Sine, Triangle and Pulse it is a very stable, accurate and marvellous sounding oscillator. Being a classic VCO you will have a 1V/OCT input, linear and exponential frequency modulation inputs as well as full control over the pulse width modulation option. Each of the last mentioned inputs has a dedicated attenuator in order to handle incoming control voltage.

 

Cyllene oscillates all the way from supersonic to subaudible. Thus this module may also be used as an LFO.

 

In addition to the classic VCO functions Cyllene also provides an integrated frequency divider. The SUB output jack will supply up to 3 sub octaves in relation to the original signal. The volume of each suboctave may be adjusted with the potentiometer visually connected to SUB 0-8. Using the switch SUB ORIG you can choose if the original signal or a generated square wave on the initial octave will be supplied. Additionally you can choose the source wave for the frequency divider with the SUB WAVE Switch

 

Details:

• Classic Analog VCO

• 4 Outputs: SINE, TRIANGLE, PULSE, SUB

• Oscillation from supersonic to subaudible (LFO)

• 1V/Octave tracking • Pulse Width Modulation with Attenunator

• Linear Frequency Modulation with Attenuator

• Exponential Frequency Modulation with Attenuator

• Integrated Frequency Divider

• Up to 3 Suboctaves

• Attenuator for each Suboctave

• Wrong Polarity Protection

 

Power: 26mA at +12V and 19mA at -12V

Width: 12 HP

 

This is a Panel/PCB Do-It-Yourself kit, not an assembled module and you have to source your own parts! Building instructions, interactive BOM tool and all needed infos can be found via www.st-modular.com

DIY level: Advanced. You need to solder SMT parts and it is not recommended for beginners.

ST Modular - Cyllene v2

19,90 €

  • 0,1 kg
  • Available
  • Ships within 3-5 days1