egg|nomz|egg changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer.
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<kmath>
<Zaikarion> @bofh453 @eggleroy Fun fact: Akkadian numbers 1 and 2 match the gender of the counted noun, while 3 to 20 take the… https://t.co/AMwFs4tjww
<egg|cell|egg>
Ah yes I remember that
<egg|cell|egg>
Blarg still can't sleep
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<iximeow>
"optimizing compilers" that `and dl, 6; cmp dl, 6; jne ...` rather than `and dl, 9; jnz ...` :|
<iximeow>
one of these paths must use dl eventually...
<UmbralRaptor>
egg|cell|egg: that means more time to use the telescope!
<kmath>
<ProfAbelMendez> We will be transferring our IDL code from the Habitable Exoplanets Catalog to a #Python #GitHub repository.… https://t.co/c1pMB7cF7G
* UmbralRaptor
stares at @myrrlyn's and @mannishearth's posts on "why blog"
* UmbralRaptor
is concerned that the intersection of "not redundant/done better elsewhere" an "at least 1 in 1e10 other people care" is null. Or at best filled entirely by posters, conference talks, and arχiv.
<kmath>
<deaduniverses> Under satellite headphones every night she listened to the static from Pulsar 66956. It took her 15 years to find a… https://t.co/2v0tPktn3F
<UmbralRaptor>
"Amusing as it would have been had they tried to translate from one regexp syntax to another using regexps... they did not do that."
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* UmbralRaptor
meows at sleep. (or the lack thereof)
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<egg|laptop|egg>
bofh: UmbralRaptor: yeah the figures at the bottom of http://deepskystacker.free.fr/english/theory.htm tend to point towards biases being a no-op for any combination method such that C(f_i + k) = C(f_i) + k
<egg|laptop|egg>
unless you don't make a dark flat and use the bias for that instead, but then you'll have dark current in your flat?
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<UmbralRaptor>
egg|anbo|egg: teaching ANBOcat about ICRS and GCRS?
<egg|phone|egg>
Eggs
<egg|phone|egg>
actly
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<UmbralRaptor>
<@dfj> having to write an unbroken string of 16 consecutive backslashes - is an event that ideally happens zero times in ones life.
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<bofh>
UmbralRaptor: "challenge accepted" :P
<UmbralRaptor>
aaaaa
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<kmath>
<hashtagoras> Did You Know? The “academic job market” was named for the biblical Job, who endured not only endless unjust torment… https://t.co/4vHm534wtk
<bofh>
!meow egg|phone|egg
* Qboid
meows at egg|phone|egg
<bofh>
!meow Qboid
* Qboid
meows at Qboid
<bofh>
!wpn egg|phone|egg
* Qboid
gives egg|phone|egg a phi FBEventUpdateNotificationSubscriptionLevelMutationOptimisticPayloadFactoryProtocol-Protocol/heat sink hybrid
<egg|phone|egg>
UmbralRaptor: attach a phone to a cat with CCD, equivalently
<egg|phone|egg>
Working from the tgv works surprisingly well
<egg|phone|egg>
UmbralRaptor: phone might become tricky to carry
<UmbralRaptor>
replace UmbralRaptor with UmbralRoc?
<egg|phone|egg>
Or smol cat
<bofh>
so it turns out the SNCF jingle if completed permutation fugue style works quite well as a replacement for the Contrapunctus 1 voice.
<UmbralRaptor>
The rusty-spotted cat and black-footed cat appear to have conservation concerns
<egg|phone|egg>
Bofh: btw, heard the "be aware of your belongings and phone" thing in ja de zh en on the 14
<bofh>
yeah I've noticed that's on the 1 4 14 and I *think* 7, but interestingly not on the 5.
<kmath>
<✔chemsafetyboard> Today we released a dataset of chemical incidents that occurred in laboratories from 1/01 to 7/18. The labs include… https://t.co/sG91VKkKnh
<kmath>
<melschriver> @Chemjobber Back in the day when we had to make Slater type orbitals with our own hands from three Gaussians we eit… https://t.co/Tu1gV46apk
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<egg|cell|egg>
!Wpn bofh
* Qboid
gives bofh a gravitomagnetic fractal
<egg|cell|egg>
!Wpn whitequark
* Qboid
gives whitequark a pulsed sickle
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<kmath>
<nanographs> Im up at 2:30 in the morning reverse engineering a board where they AUTO ROUTED GROUND I MEAN FOR REAL WHO THE HELL… https://t.co/RMMWiELa9C
* UmbralRaptor
🔪 the CSB. That file should be a CSV, not a PDF.
<egg|cell|egg>
Bofh : what happens if you autoroute ground?
<bofh>
egg|cell|egg: oh gods. so typically in like, every PCB I've seen, you either have a separate layer as a ground plane or you make ground take up as much of the board as possible.
<bofh>
the reasons for this are twofold: EMI suppression and so that you can send return currents to ground w/o voltage drops between component grounds (since, if component A is at one ground potential and component B is at another and they are at a different potential level, you now have current flowing from ground to ground)
<bofh>
now, autorouters are designed to route power/signal/etc traces: so they'll create traces that minimize board space, often snake a lot, and are very thin. so an autorouted ground will fail at EMI suppression and often have enough resistance to, in fact, create ground loops *on the circuit board*.
<bofh>
this is merely stupid for something that works at low clock frequencies but if you're working at high clock frequencies or with analog RF at >450MHz then crosstalk, RFI and ground loops likely will cause everything to be unstable and give chaotic weird failure modes.
<bofh>
whitequark and/or rqou prolly have more to add.
<whitequark>
bofh: oh yeah i have something to add
<kmath>
<whitequark> in awe of the mad design skills of whoever made the Lattice iCE40-UP5K-B-EVM devboard ⏎ first, they assembled the VCC… https://t.co/ALIfCNFKbf
<kmath>
<whitequark> free advice: the routing of the vagus nerve in your body is not to be taken as inspiration for routing ground traces on the PCB
<bofh>
ROFL
<whitequark>
bofh: so the VPP2V5 thing is real weird.
<whitequark>
VPP_2V5 can actually stay at just 3V3 if you never program the NVCM
<whitequark>
(internal bitstream ROM)
<whitequark>
but then you could have literally just tied it to 3V3
<whitequark>
which, in fact, they also recommend
<bofh>
okay, that makes the magical mystical diode placed there even more of a strange choice.
<whitequark>
I think they're just not very good at designing hardware
<bofh>
I am *completely* not surprised the PLL on the scenic route ground trace board won't lock, but uh, that now makes me ask the next obvious question, namely: did they, like, test the devboard *at all* before doing a massive production run/tapeout?
<whitequark>
well they clearly didn't test the PLL
<whitequark>
which is used by one of their refernce designs
<whitequark>
HDMI something
<bofh>
*stare*
<whitequark>
also people in the discussion thread about this board report that reading out the flash contents as shipped implies that...
<bofh>
Is QA not existent at Lattice Semi or something?
<whitequark>
... the flash is recycled from some Cisco router and still contains Cisco firmware
<bofh>
ROFL
<iximeow>
omg
<whitequark>
I imagine they sent it to whichever Chinese assembly house provided the lowest quote and called it a day
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<egg>
!meow whitequark, bofh, UmbralRaptor, et al.
<Qboid>
(1,2): error CS1660: Cannot convert `lambda expression' to non-delegate type `object'
<Qboid>
System.Func`1[System.String]
<Qboid>
(1,2): error CS0103: The name `bofhtime' does not exist in the current context
* Qboid
meows at whitequark, bofh, UmbralRaptor, et al.
* egg
back in zurich
<egg>
ah yes, nonexistent bofhtime,
<iximeow>
!meow egg in zurich
* Qboid
meows at egg in zurich
* egg
reads backlog
* egg
should learn some eleggtronics to properly appreciate the insanity
<egg>
!pet bofh, whitequark, et al.
* Qboid
pets bofh, whitequark, et al.
<egg>
!choose calibrate images | I got up at 7:30
<Qboid>
egg: Your options are: calibrate images, I got up at 7:30. My choice: I got up at 7:30
<egg>
;choose calibrate images | I got up at 7:30
<kmath>
egg: I got up at 7:30
egg is now known as egg|zzz|egg
<iximeow>
nn
<egg|laptop|egg>
meow
* UmbralRaptor
assumes that bofhtime is one of those horribly convoluted high dimension metrics
<bofh>
I mean bofhtime being not easily definable is *eggstremely* on-brand.
<bofh>
!wpn egg|laptop|egg
* Qboid
gives egg|laptop|egg a trigonometric formalism
<iximeow>
wow i was going to go for a nodejs `bofhtime() -> "undefined is not a function."` joke but apparently they've gotten a lot better about saying *what* was undefined
<kmath>
<✔Alex_Parker> Lately, Henry hasn’t been around much. He spends his time off with the other blue jays, presumably impressing them… https://t.co/xGh4IdH5rQ