Flexible module builds like mixers, MIDI to cv, noise and simple passive circuits don’t need to be kosmo width. Or a mirrored panel in the middle; you are going to be staring at it a long time.
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My cut-to-width-by-Americans-with-sloppy-tolerances aluminum panels have only a vague nodding acquaintance with round metric widths, so planning for a round metric case width for me would be pointless. Even my Vector rails have sloppy tolerances, they were nominally 60" but were really 60.5". I sawed them in half and that’ll be the case width.
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Umm, ok, I think I see the problem.
(non-supply nets trimmed out)
EDIT: The good thing with this kind of screwup is that you only need to add one bodge wire 
Once that was sorted, everything worked exactly as planned.
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Oops.
(Apologies for the supply wire color choices, I don’t like using yellow/green for non-earth, but I’m using a piece of 3-wire mains cable so the choices were a bit limited. And nothing was connected to the board, so the only victim here is the poor capacitor. And my nerves…)
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I can smell this picture.
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Every time you post an oops, it makes me feel better 
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Did you only blow a capacitor up or did it get full-on impregnated with a face-hugger?
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Do you know how many utterly boneheaded wiring errors it’s possible to make on an 8 step keyboard sequencer?
Nope. More than that.
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yeah still need to make mine work too …
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For one thing, when you’re working from the back? It goes from 8 to 1 left to right, not 1 to 8.
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I gave up on my freeform 8-step, that’s why I started my PCB project…
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It’s actually doing fairly well. After dealing with a couple of backwards diodes, everything I tested so far looked like it more or less worked, except that steps 1 through 8 were 8 through 1, and on each stage the toggle on/off switch was off/on. The reversed steps can mostly be fixed in software, except in my version button 1 is special, being connected to the reset pin, so I do have to reverse the wires for 1 and 8. First I’m doing the switches, two down, six to go, because I refuse to just relabel them and have off be up and on be down.
And there’s some switch bouncing to deal with, but that’s also software.
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I tried some debouching in arduino software recently, I think it was when using the IRQ line on the dunio for my sequencer. it was only partially successful and was not overly confident.
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fried one of my VCOs the other day by plugging the power into the wrong connector. to fix it, I swapped out one of the ICs (whichever one was hot) and pushed the Arduino code back onto the Arduino. works good as new. just pay more attention than i did.
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yeah you gotta watch that extra connector . I put tape over mine , after cooking the op amp on one of my vco’s of course it was the only one I hadn’t taped right from the time I built them .
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smart. I’m going to do that right now.
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I’m pretty sure that mistake is what started this thread
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i have not even fitted the “link” connector… Sam has eluded to it in one of the recent vlogs or at least i think it was what he was on about…
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Rob,
The link connector functions as in/out for an oscillator drone with up to three oscillators, which could be three 3340 VCO’s but there was something about a cross contamination synthesis oscillator (Fart Box) and a Modcan style VDCO that could interchange with any VCO. The system will be oscillators, a driver to control pitch and FM and a mixer.
Imagining a wall as tall as me of oscillator drones using 3340 VCO’s was my entry to the Kosmo rabbithole. I want to name my modular although it’s not a separate format (exactly the thoughts of using the Kosmo format but not Sam’s own Kosmo persona) which I’ve been dumb at coming up with a name. This is fitting for this thread.
-Fumu / Esopus
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Call it anything but put hybrid+ at the end then the form can be anything you like.
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