My first was a Eurorack case made mostly from Coroplast (old lawn signs, gathered up for free the day after election day), duct tape, adhesive vinyl, and some rails I spent actual money on. Used it for more than a year. My thinking was that I didn’t know yet what sort of case I’d really want in the long term so I’d make something cheap and replaceable to use until I figured that out. (Turns out the sort of case I really wanted was Kosmo…)
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I bet that was a real beaut, amazing! I’m sure I’ll rustle something up, though it feels like two big decisions in one, in stepping up to something that stands on its own: size (and format) and power. I’ve got some catching up to do, as I imagine there are plenty of conversations here already on both…
Meanwhile I’ve got some batteries and guitar pedal enclosures to put together a few more simple circuits to keep practicing…
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Have a look at the FAQ category, particularly Power supplies choices?
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Hello, I’m Francesco Marchetta, I live in Palermo (Sicily) and I study at high school and at B.A. Conservatoire.
I started to build synthesizers when I saw the Sam’s super simple oscillator video and so I read some magazines and search files and schematics on Internet. At the moment I built 20 synth modules (VCO, VCF, VCA, A/R GEN and so on…). I’m just noobie but when I’ll finish the school I want go to College Electronic Engineering to expand my electronic knowledge. At the moment I want to create an oscillator based on Maxduino library like Ableton’s Operator plug-in but I think that is impossible.
I posted here my layout of Moritz Klein hi-hat but I never saw this section of forum 
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Hi, Everyone!
All my life i’m near to electronic music. Had some synths around a life. And now have sweet setup, for me for sure) Mostly Elekrton stuff. But not it all, some Moogs, Clavia, Korg, Arturia, RME, Adam, etc). Looks enough? Yes! (it’s soooo sweet) But from New Years time i was starting to try build some modules (never had any modular stuff). Winter, but solder iron is warm)
And now i want to say Thank You WERRY MATCH for yours lessons my trusty Teachers!
Yes you are!
@moritzklein, @EddyBergman, @analogoutput, @lookmumnocomputer.
For sure it’s not at all, this forum is amazing cluster of information for troubleshooting end experiences what peoples had and share it. Sorry, for not every one in list.
Now i’m following Mr. Kleins builds and now had VCO, VCA, ADSR (simple), Ladder Filter. Almostly done simple monovoice synth. Strip Board/Kosmo
Building it’s troubleshooting for sure)) But i can!
So… say, it’s very fascinating to build a synth, just nothing to say about it!
Thanx again for all of you!
Sorry for my English.
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Hi! I’m trying to design my own synth made with cheap stuff because man that stuff is really expensive. I am very new to this stuff and have no idea what I’m doing except from what I read on Wikipedia.
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Welcome! There are a few of us still who work with junk. Half my gear started life as something else. Keep us posted and use the search function as there a quite a few “recycled” projects here.
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Hi I am Peter, engineer, not a musiscian, well i have some cameras and some synthesizers some Eurorack and my worklpace looks a bit like a studio a soldering place for electronics and a classic nerd cave.
My aim is to experience signalprocessing by your senses.
I Live in berlin and do some computer work for Money
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Hi, I’m Cory. I’ve been making terrible music with an MPC for a while now and a couple years ago started messing around with VCV Rack. That led me to the world of eurorack youtube videos, but I had no interest in throwing money at that hobby until I discovered AIsynthesis and decided to try building a few of their modules. I’ve only recently learned about the Kosmo format through LMNC and it makes much more sense to me. I didn’t like the fiddly little eurorack knobs. I’ve been reading posts here for a couple months and just placed my first order at Tayda so I can start building some modules. This community is really awesome and very helpful.
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Hello All - I’m Bob, from the Chicago area. I’m a game developer by trade, long time keyboardist and synth enthusiast. My favorite thing is making something out of nothing, whether it’s a game, song, or whatever. As a long time maker of software, I’ve become very interested in building physical products. I’ve been working with Arduino boards, but dipping into Raspberry Pi, and the XV1A synth project.
I’ve mostly been building keyboard controllers lately. My other latest project is building a lightweight B3 controller containing an HX3 by keyboard partners.
Great to meet you and I look forward to seeing what you’re up to and learning from you all.
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Hi there,
I’m new here and would like to introduce myself. I am Nils from northern Germany. I studied mathematics and computer science some time ago and am currently working as a software developer.
I don’t have much experience with either (analogue) electronics or music (making). But some time ago I had the idea to make better sounds with my SY-22 and use it mainly as a midi keyboard (without my desktop computer). So I stumbled across the zynthian project, which is a cool open source music making thing based on a raspberry pi that can be used as a keyboard expander, micro daw, midi sequencer, effects processor, etc and can be bought as a kit or made in a DIY way. I chose the latter. To get a good result without using official components, I had to learn the basics of 3D design, 3D printing, soldering, very basic electronics and so on. It wasn’t as easy as I expected, but I managed and it works now.
I know that the Zynthian is not a device that fits directly into the category of music and electronics discussed here, as it is mostly digital, with simulated effects etc. But while I was working on the project I found some LMNC videos and was absolutely impressed and fascinated! (Of course, it was a little bit sad to only discover the videos shortly after the German tour.)
So I watched more of Sam’s videos and tried to learn a thing or two. And now I am working on another thing that fits better here. It is a buffer amplifier with a high pass and a low pass filter to get an adjustable line out of a piezo noise box.
I might have a question about this, but that is for another thread.
Fun fact: As I said, I am not a musician and I am doing these things out of curiosity and for the fun of building and learning things, but maybe this will result in something musical anyway.
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@nils Welcome to the rabbit hohle.
So many similarities to my own story, I had to reply. north Germany, too late for the tour, not being an musician (yet), software developer … Now I’m in “here” for three+ years and own a wall filling setup. Before i only had a flute from school days. I saw the live show this april. what a journey… ENJOY 
This is a very accepting place with supportive and nice people.
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Hello! I’m fairly new to building circuits, but I’ve been circuit bending toys from thrift stores for about 18 years now. I got some friends together and we all built a CDOD (I made two). I live in the states and I’m waiting on some components to build a couple AAAPPPCCCs. I’m always drawn to funny sounding noises and everything I find on Look Mum is right up my alley.
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Hi there!
I’m Sam, Graphic designer is my full time job but I fell into a DIY synth rabbit hole from watching LMNC and Moritz Klein on youtube.
This forum has been amazing for troubleshooting so I figured I’d stop lurking and make a post.
I’m almost finished my USB-C powered mini Kosmo format synth. Here’s the progress so far:
Couple things I still need to fix, don’t think the attack works on the AD mode of the envelope generator, and the CV input on the filter could open up some more.
This was a crazy process and I didn’t even expect to make it this far.
The power supply I’m the most proud of, I made a stripboard layout from the MMI USB power schematic. Switching out the USB A for USB C.
I liked the idea of using the Meanwell dkm10e-12 DC-DC as the power supply. It seemed the most plonker proof with its short-circuit protection and what not. Only has 400mA or so of power, but that’s enough for this small rig.
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The usual standard for filter CV is to change the cutoff by 1 octave per volt. An 8 V envelope should give an 8 octave cutoff change, which is probably plenty for most purposes. The 1 V/octave behavior means you can sum in the keyboard CV and have it behave similarly for notes all up and down the keyboard, and it means you can turn up the resonance to self oscillation and use it as a sine VCO (though probably with not as accurate tracking as a regular VCO).
If your filter isn’t 1 V/octave that can be adjusted. If your envelope, or whatever is driving the filter, is smaller amplitude, you might need to amplify it.
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Hi y’all, Mack here. Sound-freak blundering his way through electronics.
Participant @ Hack42 in Arnhem, initiator of Synth Maarten, also connected to Elektrik Café and Fetisjism in Sound.
Now busy with building a dedicated Shepard tone module.
Too many other interests (that comes with the ADD label)
Cheers
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Very cool! I had a very similar set of modules on breadboard for my first dive into diy synth. I never got my shapes working right but I have had much success with that 3340. Ive used Moritz Klein’s opamp filter design and sequencer design more than any other circuits for my modular rack. This site has been my teacher more than anything tho. From knowing nothing to learning enough to make a rack with modules and some decent sounds at the very least. Juanito Moore at Modular for the Masses has some great stuff too. As well as Kristian Blasol at Modular in a Week on YouTube.
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I went virtual modular with my Ksoloti Gills so I can learn about modular synths without having to spend lots on modules I didn’t know about. Now I can build something functional easily, and get a feel of where my interests are. It’s been 2 days, and I’ve learned so much!
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Hello! I’ve been building Eurorack modules for a couple of years now, and after eyeing the Kosmo format from afar (thanks @heckseven and @devicex ), I finally had the opportunity to dive in when an online friend was selling their unbuilt LMNC pcb/panel sets.
I’ve got the start of a functional case together, but unfortunately I’m not going to meet my goal of having a fully working Kosmo case for Knobcon this year.
I hang out at and stream at Earth Modular Society a lot, but I’ve been trying to hang out here a little more often to catch up on all the great projects
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hiya , I haven’t dropped in here in a bit but I see a familiar name from EMS .
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