eurorack
Digital Modular Synthesizer Powered by Raspberry Pi
2025
3dPdModular is a modular synthesizer system running on a single Raspberry Pi mini-computer and a Teensy microcontroller. 3dPdModular utilizes minimal components since all the hard work of the entire system happens inside the Pi.
3dPdModular sets a new approach to modular synthesis. It is an open-source plug-and-play modular synthesizer system running on a single Raspberry Pi computer (3 or 4), programmed in the Pure Data environment (although no programming skills are required)! It includes all standard modular synthesizer features, like oscillators, filters, envelopes, etc. but offers a range of unique features like saving patches to your phone via our mobile app, cloning modules, cross-fading between patches, generic modules that can be programmed by the user, and many more!
3dPdModular Synthesizer
- digital innovation in an analog look
- plug-and-play
- low cost
- save your setups on a mobile app
- endless sound capabilities
- A novel modular synthesizer comes to life!
3dPdModular Modules
Alexandros Drymonitis favorite modules are:
SEQUENCE, an 8-track step sequencer with up to 64 steps and three different types per track (CV, trigger, or ADSR). Its control interface is simple and intuitive balancing between flexibility and ease of use. You can also save your sequences and recall them whenever you want.
ENVELOPES, a four-channel AHDSR envelope generator with separate settings per channel, manual or CV triggering, as well as End-Of-Stage output. Like the SEQUENCE, you can save as many envelopes as you like and recall them any time.
CLONE, which clones other modules up to 8 times! It is capable of cloning single modules or sets of inter-connected modules (e.g. an oscillator connected to a VCA). It provides a very intuitive and powerful interface for creating polyphony without needing to acquire the equipment that is being cloned multiple times!
COMMUNICATE, a module enabling communication with other hardware in four different ways, MIDI 5-Pin Din, MIDI USB, OSC (via Ethernet), and raw serial (e.g. an external Arduino). MIDI messages can be either clock or note so you can either sync your modular to your DAW (or other hardware), or connect a MIDI keyboard and use it to play melodies! OSC enables communication with other applications (e.g. control the synth from your phone OSC app). Finally, raw serial enables you to connect external micro-controllers like the popular Arduino and use various sensors to control your synth!
GENERIC series of four different modules that include a template of the system interface so you can program your own modules!
Even though the entire system runs on a single Raspberry Pi, 3dPdModular is a fully fledged modular system that functions like any other known modular system. In addition to that, it benefits from the fact that it is an integrated digital system, providing a set of special features that analog systems don’t have. Some of these features are:
- Enabling/disabling patching so you can change your patch without interrupting the sound, until your new patch is ready, then cross-fade into the new patch
- Cloning a (set of) module(s) software to create polyphony or other effects without needing to physically acquire a module multiple times
- Multiplying a signal without the need of additional modules, buffered inputs, etc.
- Saving your patch to your phone via our mobile app with the push of a button
- Physical inlets “know” whether incoming CV signals come through a VCA module or not, so their corresponding potentiometers can act either as DC offset or a VCA, never letting you run out of VCAs!
Module Boot-up Time
3dPdModular is a synthesizer that runs on a Raspberry Pi micro-computer. The computer needs to boot up and launch all the necessary applications for the system to work. This takes approximately half a minute. Remember that this synth runs on a computer, so it’s best to first shut down the computer and then power off the system. Even though you’ll probably damage anything by just unplugging it, it is recommended that you use the main button found in the Main module, to shut down your system properly.
About 3dPdModular
3dPdModular is an innovative modular synthesizer system with a new perspective to modular synthesis
Funding Campaign
Alexandros Drymonitis started a GoGetFunding campaign to get funding. GoGetFunding is a crowdfunding website that lets you raise money for anything that matters to you. Some of the higher price tiers of the campaign do NOT include a Raspberry Pi computer or a power cable if you spend 1125.00 or More that is a bad marketing move.
The DYSMETRIA DIY kit is a desktop and Eurorack format analog groove synthesizer. It’s a full voice analog modular groove synthesizer that can be used as a Desktop or Eurorack synthesizer. It comes along with a dedicated USB to Eurorack power converter, so you can use it in both formats without any problems!
The DYSMETRIA DIY Kit is a limited number of kits full voice analog modular Groove Synthesizer in Desktop and Eurorack format. This limited number of kits allows you to have the same great experience in music-making with this amazing product. With this fantastic product, you’ll be able to have an awesome time making music with your friends and family. This great product is perfect for those who love music and want to share their passion with others.
DYSMETRIA DIY Kit
The DYSMETRIA Diy Kit is a full-voice analog modular groove synthesizer that makes it easy for inexperienced DIYers to create amazing sounds. With two analog oscillators, voltage-controlled mixer, noise generator, voltage-controlled FM section, and two-pole resonant filter with lowpass and bandpass outputs, this synth is capable of creating a vast range of sounds.
The 32-step sequencer with 3 modes (play, live, rec) and step-by-step recording lets you create complex rhythms and basslines with ease. The 16-user presets allow you to save your favorite sounds for quick recall. And with 15 patch points, the possibilities are virtually endless. All the components needed to complete the project are included in the kit, and the detailed instructions make assembly a breeze.
Great Way to Get Into Analog Synthesis
The DYSMETRIA DIY kit is a great way to get into analog synthesis, and it’s perfect for anyone who wants to make their own music. The DYSMETRIA DIY kit is a great option if you’re looking for an analog groove synthesizer that you can use in both your desktop and Eurorack setups.
It’s the full voice and comes with a USB to Eurorack power converter, so you can use it in both formats without any problems. Plus, it’s a great way to get into analog synthesis if you’re new to the world of modular synthesis.
The DYSMETRIA DIY kit is a great option if you’re looking for an analog groove synthesizer that you can use in both your desktop and Eurorack setups. It’s a full voice and comes with a USB to Eurorack power converter, so you can use it in both formats without any problems.
Plus, the 16-user presets allow you to save your favorite sounds for quick recall. And with 15 patch points, the possibilities are virtually endless. All the components needed to complete the project are included in the kit, so you can get started right away.
Conclusion
The DYSMETRIA DIY kit is a full-voice analog modular groove synthesizer that makes it easy for inexperienced DIYers to create amazing sounds. It comes with two analog oscillators, a voltage-controlled mixer, a noise generator, a voltage-controlled FM section, and a two-pole resonant filter with lowpass and bandpass outputs. Plus, it has a 32-step sequencer with three modes and step-by-step recording.
The DYSMETRIA DIY kit is a great way to get into analog synthesis, and it’s perfect for anyone who wants to make their own music. It’s a great option if you’re looking for an analog groove synthesizer that you can use in both your desktop and Eurorack setups. Plus, the 16-user presets allow you to save your favorite sounds for quick recall.
All the components needed to complete the project are included in the kit, so you can get started right away. With the DYSMETRIA DIY kit, you’ll be able to create complex rhythms and basslines with ease.
Hello everyone. We’ve been on a Budhist retreat in a cave on the dark side of the Moon for the last two years and literally just returned to Earth today. Did we miss anything whilst we were gone? Anything exciting happen?
Signal Sounds Roundup May 2022
Now that we’re back, fully enlightened and settled in again we’ll endevour to make these mails more regular, keeping it short and sweet and hopefully giving you the best new synths and modules and a few interesting titbits we’ve seen on our travels over the internetz.
Superbooth
Superbooth is the primary source of excitement in the modular and synth world at the moment, taking place in Berlin on Thursday 12th May through to Saturday. Both myself and Aleks will be bothering every one of the 100+ companies exhibiting there to get the lowdown on what new delights they have for us. We’ll do a round up afterwards but the best place to see regular updates would be on our Instagram page.
Ben DivKid continued his mission to bring interesting and affordable modules to the world, His last was with Stead State Fate (the wildly successful RNDStep) and this time around he returns to his first partners, Befacco, to bring us the Stereo Strip.
It’s outrageously good value given that some companies charge more than £200 just for an Audio In and Out module – this one offers that feature (Eurorack or standard Line level, separately selectable for both in and out) PLUS a very high quality Stereo panner and EQ circuit. It’s very funky and not very chunky given that it’s only 6hp. The usual high quality video from Ben (above) is here if you need more convincing.
Look Mum No Computer has been a big figure on YouTube for a long time now and has a repuation for unusual large format 5U modular synths but has now taken those designs and succesfully transplanted them into Eurorack format. The first (of many) module is an all analogue Oscialltor with built in visual Tuner (something rarely seen and since the demise of TipTop’s Z3000…almost impossible to find) and other performance oriented features like Octave Switches. Almost sold out already, move quick if you need to get one.
Non Eurorack Stuff – still lots of interesting stuff happening outside of your rack, look out for some really, really good stuff from Polyend, Moog and Korg in particular and of course the new Dave Smith/Oberheim release, the OB-B8 which we’ll be elbowing people out of the way to get a shot of at the show.
Signal Sounds Shop – if you’ve communicated with us over email in the last year you’ll have heard us moan about how long it’s taken to get the new place fully up and running after out move, however…..we have some final touches being applied to the showroom next week and after that we’ll be in a much better place to make a really inviting and comfortable place to enjoy synths and geek out in. There’s all the Eurorack you can eat plus a cross section of vintage synths, drum machines, mixers and effects to mess with. And a Beer Fridge.
Just a few bits that are in stock now that are worth mentioning
This little lot have show up over the last week or two:
Ben DivKid
Look Mum No Computer
Non Eurorack Stuff
New and Updated Stock
eurorack
Transit Eurorack Mixing – The All-Analog Stereo Signal Processor with Dual Mono Channel Lanes and Ducking Input
2025
Looking for an all-analog stereo signal processor with dual mono channel lanes? Look no further than Transit Eurorack Mixing! This amazing eurorack module has two channels of audio with its own input gain control, mute button, and ducking input.
The Ducking input on each channel operates like traditional side-chaining on a compressor, allowing you to modulate the gain reduction of the audio with an external signal. Whether you’re looking to add some depth to your sound or create interesting effects, Transit is sure to be a valuable addition to your eurorack case!
Transit Eurorack Mixing
The Transit is a 6HP mixer with two stereo channels that is designed for use in Eurorack systems. It features a variety of mixing and performance-oriented functions, such as gain staging, ducking, and mutes.
The Transit is compact and easy to use, making it a great choice for small Eurorack systems. However, it is also capable of being used in larger systems, thanks to its robust construction and versatile feature set.
Mixer and More with A Small Footprint
All in all, Transit is a rather full features compact 6hp dual stereo channel lane eurorack formatted mixer that offers easy signal mixing, gain staging, ducking, and performance-oriented mutes.
Transit is just as at home in a small eurorack system as one Transit or several would be in a larger system. The build quality is excellent with a sturdy aluminum chassis and clear LED indicators. The audio quality is very good with low noise and distortion. The controls are well laid out and easy to use.
Eurorack Module Transit
The Eurorack module Transit is a versatile tool for processing audio signals. It features two audio stereo (dual mono) channel lanes with an all-analog signal path. Each stereo channel lane has its own input gain control, mute button, and ducking input.
Ducking Input
The Ducking input on each channel operates like traditional side-chaining on a compressor where an input signal, CV, or Trigger input (i.e. LFO, Clock, Gate) modulates the gain reduction of the audio. This allows the Transit to be used for a wide range of applications, from simple level attenuation to complex audio processing.
Dedicated Output Section
In addition, the Transit includes a dedicated output section with level controls and an output mixer. This gives the user complete control over the processed signal, making the Transit an ideal solution for anyone looking for a high-quality audio processing tool.
Transit offers two different audio output options, each controlled by its own volume knob. The main stereo output is perfect for speakers or other external sound systems, while the 3.5mm headphone output is ideal for personal listening.
The headphone output is located on the front of the Transit for easy access, and the level control knob allows you to adjust the volume to your preferences.
Connect to the World and Eurorack Case
The Transit comes equipped with everything you need to get started making great-sounding music right away. Its all-analog signal path starts with a 3.5mm headphone jack, which has its own independent volume control knob.
From there, the signal travels to left and right stereo output, where it is controlled by a MASTER volume knob.
The Transit also features a built-in metronome, which is perfect for helping you keep time while you practice or play.
Controlled LEDs
The level of each stereo channel is indicated by LEDs that can be controlled digitally. The LEDs will illuminate in white, blue, or pink to show the level. When the mute is engaged, the LEDs will turn red.
There are also LEDs for the master and headphone levels that use the same color scheme. This allows for easy level indication without having to look at the actual levels. The colors make it easy to see at a glance which channels are muted or at what level they are set.
As anyone who’s ever dealt with a finicky sound system knows, level indicators are essential for getting the perfect sound. That’s why the Transit is equipped with digitally-controlled LEDs (Light-Emitting Diodes) for each stereo channel lane. The LEDs use a white, blue, and pink color scheme to indicate level, making it easy to get the perfect sound.
And if you need to mute the sound completely, the Transit has you covered there too. The CH1 MUTE and/or CH2 MUTE buttons illuminate in red, so you can be sure that the sound is completely off. Meanwhile, MASTER and PHONES levels also have their own LEDs for level indication.
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