Thank you! Trying to think of a power supply idea for my next case but haven’t thought of anything great recently. I’m sure I’ll think of something super dumb 
3 Likes
Id be tempted to steal it, but space is limited for me, my cases are only 60cm HP.
im finding it hard to decide on if i should just go basic and check a switch on the back of my cases XD
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I’ve got a switch on the back of each case also 
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More cramming things into 2HP. Both from Hagiwo. The 4040 clock divider and simple Quantizer. The worst part is now I am going to have to do more rearranging of my Port-A-Synth modules.
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Are the 4 boards in the top 2 pictures supported in some way or are the soldering joints enough?
It’s just solder joints. I used cut off resistor legs to attach things together, so there is some extra support beyond the electrical connections. It makes for surprisingly rigid attachments.
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My biggest project so far is finally done and working.
It sounds really good (I’ll make a proper sound demo soon) and it is so much fun to play with.
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Quad North Coast Synthesis MSK-006 Discrete Exponential VCA ported to the Kosmo format!
No chips! All transistors!!
Faceplate designed with my own software, Synth Printer
I have a more detailed build thread on my personal blog thing:
(Made this post in the wrong thread lol, it’s confusing how discourse lets you edit a draft while on the page of another thread)
11 Likes
I realised that my keyboard-based patches always included:
1: patch cable from MIDI module’s 1V/OCT output to a separate GLIDE module,
2: patch cables to a SUMMING AMP to add the MIDI module’s BEND output to the pitch, and
3: a passive multiple module to distribute the pitch CV to each VCO.
So here is a 4HP utility module to combine three 1V/octave CV functions: glide, pitch-bend, four buffered CV outputs.
8 Likes
Whenever I think of a new module I wonder what to include in it. Often it starts with a basic idea and then I invariably think “but would it not be handy to include such and such to it?”. But I also do not want to build a complete synth every time I have an idea for a new module. In reality I find it difficult to draw the line. Should I build only basic modules, consider them ‘semantic minima’ and add patch cables to combine them to something bigger or should I combine some of them into one module and have modules that are somewhere between the minima and a full synth (e.g. a Moog Model 32 mounted in a rack as a module).
A lovely little utility, bravo.
Thanks @Jos.
Usually my opinion is “modular means modular” so keep functions simple and separate, mix them up as I go.
But the prototype for this one has been constantly useful since 2019 - speeds up patching, saves on cables and keeps them localized into one corner of the cabinet.
So perhaps if there’s a patch we always plug the same way, un-modularize that bit. As a module.
2 Likes
It’s like drum modules — you certainly can use a VCO module, a VCA module, and an envelope generator module or two to make a drum voice. But if you’re doing that all the time, it makes more sense to have that setup in a dedicated module, freeing up three or four modules for other uses.
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Evolution, @analogoutput, emerging from the primordial swamps of our modular synthsizers.
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Ever thought of adding an MT32-pi to the rack? It’s a Pi3+ based emulation of the Roland MT-32.
A lot of people think of it as just a pre-GM rompler but I recently learned that it can be programmed as though it were a cut down Roland D50.
You are inspiring me to make my own rack mounted gear 
I remember them when they first came out, I was so excited to hear it had 32 voice polyphony, then the truth hit, it was 8 note poly, 4 partials per note. Sounded naff then and probably still sounds naff now.
Well, at least with the emulation you don’t need to put up with the noisy DAC any more
