Just finished this. Worked first time! (Some pots in layout seem to be backwards)
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sounds great , I would try one but I seem to have shit luck with strip boards.
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Has quite the range, doesn’t it 
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I think modular addict sells a PCB.
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checked modular addict , yes they do sell pcb for the thomas henry bass and a half doz. others .
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With stripboard, the most important thing is not to hurry up and take your time to check the location of each component several times before solder, then with a magnifying glass I check the condition of the solder … I put a cross on the paper on the installed component and I go to the next component.
Error is not inevitable but taking my time is essential for me not to lose much after trying to find a problem because the module does not work.
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The panel artwork is really really nice !!!
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Yup, stripboard is quite easy if you just double and triple check component position and cleanliness of your soldering. The layout seems to have all pots wired backwards, unless I was looking at em wrong, but don’t think so. I desperately need to come up with a way to add lettering to these, I print like a 2 year old.
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yes on this version some pot are inverted pin (example volume pot pin 1 to GND and not pin 3)
Tone, Decay are also inverted
here’s the original disposition
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for the pin pot number look at this
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They do, but it’s bundled with a Eurorack panel and panel components PCB. I might consider CTorp is doing a PCB for a Kosmo version.
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Here it is with the Volume, Tone and Decay fixed. I thought I’d already corrected it, but I guess not. Sorry about that. I will also update the original post.
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Thanks! Got er’ all fixed up. What does your Sensitivity control do? Only thing that seems a bit funky.
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It’s just an attenuator for the trigger, right? In hindsight, that could have probably been a trim pot and then I’d have had a better spot for the shape mod.
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Assuming it’s the one in the schematics (R13), the trigger goes to an input comparator (IC2a) and this pot lets you set the trigger threshold from around 50 mV to 5.0 V. That in combination with decay (R33) controls the internal trigger envelope.
Well, it changes the voltage the trigger signal is compared against instead of attenuating the trigger signal itself, but the net effect is roughly the same (at least if you ignore the input impedance).
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In principle (I dunno, haven’t built this) you might want different sensitivity for different trigger sources. Though I guess you could accomplish much the same thing by setting it to some low threshold and then externally attenuate any triggers that are too large for that.
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Interesting! This could actually be helpful. Wanted to be able to trigger it with the Big Button, which doesn’t seem to trigger any other drum module I’ve made other than Braids. *Just tried it. It works!”
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yeah I saw that as being a down side to [ being forced to buy front panel in euro rack ] . so I to hope CTrop will have extra Kosmo version pcb’s .
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3 posts were split to a new topic: Missing Adafruit_SSD1306 library