What were they thinking?

Get a load of this footprint:

image

Dimensions are in inches.

They don’t really make any sense in mm, either.

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Markey globalization…
These come from Mars, where they use their own units…

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Ordering some PCBs from JLCPCB including a little 17 x 19 mm daughterboard. That’s under the 100 x 100 mm limit so there’s the special price, $4 for 5. But I thought I’d get 10 instead, and there’s a special price for that quantity too, $5 for 10.

Screenshot from 2022-01-30 09-07-03

But then I thought maybe I’d get 15 instead, is there a special price for 15? No there is not. At that quantity they sock you with their $4 “Engineering fee” on top of the cost for 15 boards which is… $0.40?

Screenshot from 2022-01-30 09-07-53

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Come on, Linux Mint. Seriously?

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What happens if you run git --version?
In the Ubuntu graphical software manager sometimes they just don’t update the version number.
Not that I use the GUI for installing packages that much, I prefer to see what’s going on when using apt via the command line.

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It was 2.25. I’ve added the PPA shown on the Git webpage and am now using 2.36.

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Do all the YuSynth PCBs have the wrong Eurorack power header footprint, or just the Comparators?

(The rows are too far apart.)

I mean, I know Usson doesn’t build Eurorack. Still, it’s remarkable it went into production this way, and hasn’t been corrected.

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this is both brilliant and awful simultaneously - maybe “cursed” is the right word

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Good old YouTube algorithm.

image

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Ouch

image

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fa1

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That looks like a high percision device!

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If using a Eurorack PCB to make a Kosmo module, usually most of the board mounted panel components need to be changed to panel mounted for reasonable Kosmo spacing, but sometimes a couple of them can be kept board mounted. If, that is, you can make a panel with holes in just the right places.

So I either pull a picture of the PCB into Inkscape, scale it to actual size, and use the ruler tool, or I just take the PCB and go at it with a ruler and/or calipers (for high accuarcy). First step is to see if it’s laid out on metric or imperial grid.

That’s if they use a grid at all…

And if it’s a grid based on units from this planet…

image

All right, 21.59 mm = 0.85", which I suppose is a reasonable spacing if you’re laying out with a 0.05" grid. OK, fine. So if you take the PCB layout and overlay it on itself with a 0.85" offset, the pots will line up exactly, right?

Sigh. Why do they hate mathematicians and crazy people?

[For anyone wondering: Except in cases like these when I’m trying to match someone else’s PCB, my panels are laid out on a metric grid, with most distances a multiple of 2.5 mm. The PCBs are usually an even number of mm on a side. But the non-panel components on the PCBs are generally laid out on a 0.05" grid.]

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